"Der Siemens-Hell-Schreiber", H. Stahl, Siemens & Halske A. G., Wernerwerk, Berlin-Siemenstadt, 1934, 15 pp. SH5358, 1.34.1,5 T.  reprint from Telegraphen- und Fernsprechtechnik, Jg. 22, Heft 11, November 1933, pp. 291-295

"Grundlagen der Springschreibertechnik" (Part 1-5) [start-stop synchronization], F. Schiweck, Telegraphen-, und Fernsprech-Technik, Jg. 25, Nr. 3, March 1936, pp. 53-57, Nr. 4, April 1936, pp. 91-97, Nr. 6, June 1936, pp. 139-144, Nr. 9, September 1936, pp. 245-250, Nr. 11, November 1936, pp. 307-313 – 31 pp. total; also: Fernmelde-Technik, 1937,  Siemens & Halske A. G., Wernerwerk, Berlin-Siemensstadt, 26 pp. ; also:  SH. 6623, 1939, 26 pp. 

"Der Siemens-Hell-Schreiber“, Alexander B. Damjanovic, Zeitschrift für Fernmeldetechnik, Werk- und Gerätebau, Siemens & Halske A.G., Wernerwerk, Jg. 17, Nr. 12, 1936, 7 pp., SH 66554, 1. 37. 0,5 T.

"Siemens-Hell-Schreiber“, Fernmeldetechnik, Siemens & Halske A. G., Wernerwerk, Berlin-Siemensstadt, 2. 37. 5. T., SH6592, 1937, 7 pp. (courtesy Heinz Blumberg, DC4GL)

“Der SH-Feldschreiber“, Siemens-Halske AG, Berlin-Siemensstadt, SH 7535. 1.2.39. TT1., 11 pp. (courtesy Siemens Corporate Archives, München)

"Der Betrieb von Siemens-Hell-Schreibern auf Hochspannungsleitungen im Elektrizitätswerk-Nachrichtendienst" [operating Hellschreibers on 60 kV and 100 kV power lines], Fernmeldetechnik, Siemens & Halske, Berlin-Siemensstadt, 1939, SH. 7802, 1,5 9. 39, 4 pp.

"Widerstände, Kondensatoren und sonstige Einzelteile" [1930s component technology of resistors, capactors, etc.], H. Nottebrock, Veröffentlichungen aus d. Geb. d. Nachrichtentechnik, Jg. 9, 1939,  Folge 2, 11 pp., SH. 7756, 3.7.39. KV. VE., Siemens & Halske A. G., Wernerwerk, Berlin-Siemensstadt.

"Der SH-Feldschreiber", Fernmeldetechnik, Siemens & Halske A.G., Wernerwerk, Berlin-Siemensstadt, 1940, 14 pp., SH. 7535a,  1.1.40 TT1. N/1069 [note: not the same as SH 7535 from 1939, 11 pp.]

"Bandbreitenfragen bei Anwendung der Siemens-Hell-Fernschreibtechnik“ [signal bandwidth issues with A2 and A3 modulation],  Rudolf Zimmermann,  7 pp., Technische Mitteilungen des Fernmeldewerks, Siemens & Halske A.G., Wernerwerk, Abteilung für Telegrafengerät, Berlin-Siemensstadt, May 1940, SH 7998, 1. 8. 40. T T1

"Hell - Technische Mitteilungen der Firma Dr.-Ing. Rudolf Hell - Gerätentwicklungen aus den Jahren 1929-1939", Nr. 1, May 1940:

	"Die Entwicklung des Hell-Schreibers" by the inventor himself: Rudolf Hell; pp. 2-11
	"Der Siemens-Hell-Feldschreiber", by Rudolf Hell's co-workers G. Ege and H. Promnitz, pp. 11-20
	"Eine Untersuchung zur Bekäpfung von Doppelzeichen im Kurzwellen-Hell-Telegrafie-betrieb", H. Haberland, pp. 32-40

“Der neue Siemens-Hell-Schreiber“, Wilhelm Heller, Technische Mitteilungen des Fernmeldewerks, Abteilung für Telegrafengerät, May 1940, Siemens & Halske A. G., Wernerwerk, SH7996, 1.8.40 T T1., 4 pp. (courtesy Siemens Corporate Archives, München)

"Über Tastfragen bei der Siemens-Hell-Fernschreibtechnik" [interfacing Hellschreiber to CW-transmitters via keyer], Rudolf Zimmermann, Technische Mitteilungen des Fernmeldewerks, Siemens & Halske A. G., Wernerwerk, Abteilung für Telegrafengerät, Berlin-Siemensstadt, 1940,  8 pp., SH. 7999, 1.8.40. T T1.

"Kupferoxydul-Detektor "Sirutor" / Teil C 5. Grundsätzliches" [detector diodes used in Feld-Hell], Siemens & Halske A. G., Wernerwerk, Berlin-Siemensstadt, 1940, 2 pp. , 2.8.40 KV/VE C/1561    

"Kupferoxydul-Vorschaltgleichrichter" [220 Vdc power supply with Kupferoxydul rectifier diodes], Siemens & Halske A. G., Wernerwerk, Berlin-Siemensstadt, 1936, 2 pp. , 2,11,40 KV/VE C/1561   

“Öl- und Schmieranleitung für den Siemens-Hell-Feldfernschreiber“ (lubrication manual), Fernmelde Technik, Siemens & Halske A.G., Wernerwerk, SH 7976 5.6.40 T T1 (C/0921), 7 pp. (courtesy Siemens Corporate Archives, München)

“Der Siemens-Hell-Schreiber”, H. Schulz, Telegraphen-, Fernsprech-, Funk- und Fernseh-Technik, Bd. 30, Heft 2, 1941, pp. 52 - 57 (courtesy Siemens Corporate Archives, München)

"Der Feldfernschreiber", document D 758/1 of the Oberkommando des Heeres, Heereswaffenamt, Amtsgruppe für Entwicklung und Prüfung, Berlin, 1 April 1941; this is the official original manual in German for model T typ 58 (a.k.a. model 24a-32, a1, a2, based on drawing numbers).

"The Feldfernschreiber", annotated translation of "Der Feldfernschreiber" by me, Frank Dörenberg, N4SPP, update 2 May 2009.

"Stand der Siemens-Hell-Fernschreibtechnik", Rudolf Zimmerman, Siemens & Halske A.G. - Wernerwerk,  Technische Mitteilungen des Fernmeldewerks, Abteilung für Telegrafengerät, SH 7997. 0,5. 1043. TT1.  M/1401, May 1940, 10 pp. (courtesy Siemens Corporate Archives, München)

"Ein neuer Empfangslocher für Fernschreibbetrieb" [tape puncher], H. Wüsteney, E. Lölkes, F. Nitschke, Zeitschrift für Fernmeldetechnik, Werk- und Gerätebau, Heft 4, 1943, , Siemens & Halske A.G., Wernerwerk für Telegrafengerät, Berlin-Siemensstadt, 5 pp. , SH 8356. 543. TFs 2.

"Der Siemens-Hell-Schreiber", Siemens & Halske A.G., Siemens Fernmelde Technik, SH 8354. 443. TT1., 1943, 7 pp. (courtesy Siemens Corporate Archives, München)

“Siemens-Hell-Schreiber „GL““ T typ 72 c – Beschreibung“, St Bs 1211/2, October 1955, 31 pp. + schematics , Siemens & Halske AG, Wernerwerk für Telegrafen- und Signaltechnik, T Werb 2880 R GN, 956.0,2 (courtesy Heinz Blumberg, DC4GL)  [52 MB]. 

"Siemens-Hell-Schreiber „GL“ T typ 72 c – Betriebs- und Bedienungsanleitung mit Teileverzeichnis", St  Ba 1211/2, December 1956, 56 pp. + schematics, Siemens & Halske AG, Wernerwerk für Telegrafen- und Signaltechnik (courtesy Heinz Blumberg, DC4GL)  [48 MB] 

“Siemens-Hell-Schreiber 80” [description & characteristics], Siemens & Halske AG, Wernerwerk für Telegrafen- und Signaltechnik, SH 9651, 6 pp., 1960? (courtesy Arie van Oijen, PE1AQB) 

“Feldfernschreiber (Siemens-Hell-Schreiber 80) Bedienungsvorschrift Wa T App 80” [operating instructions summary], Siemens & Halske AG, SuW 54656 UN, 769.0.1, 3/68, 2 pp. (1968) (courtesy Arie van Oijen, PE1AQB) 

"Siemens-Hell-Schreiber 80 – Betriebsanleitung Teileliste“, Siemens AG, Bereich Fernschreib- und Datenverkehr, document A22232-A80-A1-1-30, SuW 55097 UN, 270.0,1,  7/1968, 175 pp.; also: Technische Dienstvorschrift TDv 5815/018-13; (Operating manual; 49 MB; low-res file (39 MB) is here).

“Siemens Hell Schreiber 80 – Beschreibung“, Siemens AG, document A22232-A80-A1-1-18, SuW 54232 1268.0,5, 11/1968, 31 pp. (Description; 15 MB)

“Siemens-Hell-Schreiber 80 - Bedienungsanleitung“, Siemens AG, Wernerwerk für Telegrafen- und Signaltechnik, Werksabteilung für Fernschreibgeräte, document A22232-A80-A1-1-19, SuW 54658 UN, 769.0,4, 5/1969, also: technische Dienstvorschrift TDv 5815/018-13; (Operating manual; 39 MB; low-res file (29 MB) is here). 

"Siemens Hell Schreiber 80 schematics A1-0-12, A1-6-12, F1-6, L80-N1-8, L80-F21-3-11 [very large format originals (size A0, A1), each scanned as multiple A3 sheets].

“Siemens-Hell-Schreiber „GL“  T typ 72 c” [brief description & characteristics], Siemens & Halske AG, Wernerwerk für Telegrafen- und Signaltechnik, SH 4057, KB T App 15, 7591. T FS 3, 2 pp., 1975? (courtesy Arie van Oijen, PE1AQB)

"Hell-72 "GL" Start-Stop-Sender, Start-Stop-Empfänger", Siemens Hell-Technik, T Ausbildung S-Hell, Änderung 1, pp. 7-8, SuW 2957 R, 559.0,2 (courtesy Arie van Ooijen PE1AQB)

"Siemens-Hell-Schreiber "L" - T empf 39 d", Siemens Fernschreib Technik, Siemens & Halske AG, Wernerwerk für Telegrafen- und Signaltechnik, Beschreibung St Bs 1223/11 [incl. schematic], July 1957, 32 pp.  (courtesy Heinz Blumberg, DC4GL)

“Die Entwicklung des Bildfunks“, Funk (Wochenschrift des Funkwesens), Weidmannsche Buchh., 1926, Heft 17, p. 131

"Die Selbstherstellung eines Funkbild-Empfangsgerätes" [build your own fax machine], Rudolf Hell, in "Funk", Wochenschrift des Funkwesens, Weidmannsche Buchhandlung, 1926, 6 pp.

"Direktzeigendes funkentelegraphisches Peilverfahren", Rudolf Hell, 1929, 10 pp., Krayn Verlag, Berlin, Hochschulschrift, 1928 doctoral dissertation at Technische Hochschule München; Also appeared in: Jahrbuch der drahtlosen Telegraphie.

"Einfärbvorrichtung Type EF 2/B - Gebrauchsanleitung" [manual for Hellschreiber re-inking device from Hell Co.], 1 p. (courtesy Heinz Blumberg, DC4GL)

"ZETFAX, aus der Praxis, für die Praxis" [Hell Co. optical-scan + Hellschreiber tape printer], Rudolf Hell GmbH, 1968, 19 pp., ZA-2-6807(592). 

"Gutenberg-Preis der Stadt Mainz und der Gutenberg-Gesellschaft verliehen an Rudolf Hell am 25. Juni 1977", Reihe: Kleiner Druck der Gutenberg-Gesellschaft, Nr. 104, Gutenberg-Gesellschaft, 1978, 32 pp., ISBN-10: 3775521046 (here: only pp. 14-32: speeches by Prof. H. Zapf and Rudolf Hell) (in German)

"Hell-FAX" [KF-108 etc.], Jörg Schlemminger (DB4LM), cq-DL, 1987, nr. 3, p. 182

"Hell-Schreiben - Dr. Hell wird 85 Jahre alt", Thomas Beiderwieden (DG9YAG), cq-DL, 1989, nr. 2, p. 120     

"Wegbereiter der Nachrichtentechnik", G. Weinreich, Deutsche Telekom Unterrichtsblätter, Jg. 53, Nr. 1, January 2000, pp. 32-36

"Lebensdaten und Ehrungen Dr. Rudolf Hell", Archiv Schierling 2001

"Rudolf Hell zum 100. Geburtstag - Das Jahrhundert entscheidend mitgeprägt", Festschrift der Heidelberger Druck AG zum 100. Geburtstag von Dr. Rudolf Hell, 21 December 2001, 16 pp.

"Rudolf Hell war ein genialer Erfinder", Gottfried North, in "DAS ARCHIV  - Magazin für Kommunikationsgeschichte, Deutsche Gesellschaft für Post- und Telekommunikationsgeschichte e.V.",  2003, Band 2, pp. 96 – 97

"Laudatio auf Dr.-Ing., Dr.-Ing. E.h. Rudolf Hell zum 100. Geburtstag", Boris Fuchs, Frankenthal, Archiv Schierling 2001

"Der 7-Frequenz-Funkschreiber der Les Laboratoires L.M.T.", L. Devaux, F. Smets, Elektrisches Nachrichtenwesen (German edition of "Electrical Communication" of International Standard Electric Corp.), Volume 17, Nr. 1, December 1938, pp. 22-34

1938 English version is here

“Abtast-Telegrafen“ [incl. Presse-Hell, Feld-Hell, 7-tone], chapter IV in “Taschenbuch für Fernmeldetechniker“, H.W. Goetsch, Oldenbourg Verlag, 1940, pp. 411-427 of 787

"Die Hellschreiber Apparate" , "Bedienung der Hellschreiber-Anlage" , "Störungen an den Hellschreiber-Apparaten", pp. 46-56, pp. 107-108, and pp. 150-154 in Schweizerische Armee Technisches Reglement Nr. T 179d "Die große 1,5 kW Kurtzwellen-Funkstation (G 1,5 K-Station)", Provisorische Ausgabe 1944

“Fernmeldetechnik“, Band 9 of “Lehrbücher der Feinwerktechnik“, Fritz Schiweck, 1^st ed., 1942, 526 pp.,  C. F. Winter'sche Verlagsbuchandlung

	"Siemens-Hell-Schreiber", pp.  149-166
	"Der 7-Frequenzen-Schreiber" [7-tone printer], pp.  166-167
	"Schnellmorseempfänger" [high-speed morse printers], pp. 145-149

"Siemens-Hell-Blattschreiber", Section 9.5.2.6 (pp. 368-372) in "Fernschreibtechnik", Fritz Schiweck, Band 9 of “Lehrbücher der Feinwerktechnik“, 4^th ed., 1962, C. F. Winter, 894 pp. Note that the Blattschreiber does not appear in earlier editions of this book. 

"Entwicklung kommerzieller Empfänger”, H. Hart, G. Schaffstein, G.Vogt, Telefunken Zeitung (technisch-wissenschaftliche Mitteilungen der Telefunken GmbH), Jg. 23, Heft 87/88, September 1950 [incl. “Telefunken Presse-Hellempfänger E 11“ and “Presse-Hellempfänger EPH/L/2” - special receivers with built-in detector/solenoid-driver for Presse Hell machines]

pp. 158-165 in "Die Erde wird kleiner: vom Fackelzeichen zum Bildtelegramm" [brief description of start-stop sync and Hellschreiber], Johannes Sigleur, Franckh Publ., 1954, ASIN: B0028N8VXK. 

"Der Siemens-Hell-Schreiber”, pp. 1314-1315 in “Das Bertelsmann Bildungsbuch”, Bertelsmann Verlag, July 1956, 1886 pp.

"Die Fernmeldetechnik als Hilfe bei der Rationalisierung der Eisenbahn", W. Leitenberger [Hellschreiber use in German railroad system is described in Section 3: "Modernisierung des Eisenbahnbetriebes"], ETR: Eisenbahntechnische Rundschau, Nr. 4, April 1966, pp. 139-146   

"Hellschreiber - een herontdekking", Hans Evers PAØCX/DJØSA, Electron,  6/1977 [in Dutch]

"Hellschreiber - a rediscovery", Hans Evers PAØCX / DJØSA, Ham Radio, 12/1979.

"Hellschreiber" series of comments to the above 12/1979 Ham Radio article "Hellschreiber - a rediscovery" article, by E. Concklin, K6KA, Henry Plant, W6DKZ, and Stanley Cook, G5XB, Ham Radio, 3/1980 and 9/1980.

"Hellschreiber - what it is and how it works", S. Cook GB5XB, Radio Communication, 4/1981.

"Hellschreiber - Nostalgie oder Realität?", Helmut Liebich DL1OY, Funkschau, 11/1990

"RTTY-Funkfernschreiben nach dem System-Hell", Peter Stolzenberg, DC9XD, QRV : Amateur Radio, Jg. 29, 1975, pp.  562-571 [courtesy Gerard Wolthuis, PA3BCB].

"Bediengerät zum RTTY-Hell System", Peter Stolzenberg, DC9XD, QRV : Amateur Radio, Heft 2, Jg. 31, January 1977, pp.  71-75 [courtesy Gerard Wolthuis, PA3BCB].

"An alle, die Hell-Schreibgeräte besitzen und damit qrv sind…”, Horst Werner (DJ2HN), QRV : Amateur Radio, Jg. 34, Nr. 5, May 1980, p. 305

"Ein CW-Hell Interface", Helmut Liebich (DL1OY), RTTY - Informationsorgan d. DAFG e. V. u. d. Swiss-ARTG, Jg. 12, nr. 1, January 1981, pp. 5-8 [translation (with PCB layout added) by Helmut of “Een CW Hell-Interface” by Klaas Robers (PA0KLS)

"Selbstbau eines Feld-Hellschreibers", Eckhard Bremer, DG9JO, RTTY, No. 2, February 1981

“2. DAFG-Hell-Contest 1981“ [contest announcement], RTTY - Informationsorgan d. DAFG e. V. u. d. Swiss-ARTG, Jg. 12, nr. 3, March 1981, p. 35.

"Hellschreiben auf Kurz- und Ultrakurzwelle", Helmut Liebich (DL1OY), RTTY - Informationsorgan d. DAFG e. V. u. d. Swiss-ARTG, Jg. 12, nr. 4, April 1981, pp. 6-9

"Funkfernschreib-Verfahren  (1)", Ludwin Monz (DF8PD), Joachim Wollweber (DF5PY), cq-DL, 1985, nr. 12, pp. 700-702

“Hellschreibrunden auf UKW und KW“, Helmut Liebich (DL1OY), cq-DL, 1986, nr. 2, p. 113

"Feld-Hell mit dem Olivetti M-10", Hans Kreuzer (DL1AN), cq-DL, 1988, nr. 3, pp. 162-163

"Hellschreiben mit Commodore 64/128", CQ-DL, 1989, p. 525

"Hellschreiber - Nostalgie oder Realität?", Helmut Liebich DL1OY, Funkschau, 11/1990

"Erfahrungen mit MtHell" and "MtHell - Ein Fernschreibverfahren für Soundkarten", Manfred Salzwedel (DK4ZC), cq-DL, 1998, nr.10, p. 811

"Digitale Kurzwellen-Betriebsarten", Fred Schulz (HB9NP), cq-DL, 2000, nr. 9, p. 643-645 

"Hellschreiben per PC: So wird eine alte Betriebsart wieder jung!", Nils Schiffhauer (DK8OK), Funk : das internationale Magazin der Funktechnik“ (later: Funkamateur), Jg. 24, H. 8, August 2000, pp. 64-67. 

"Hellschreibern: alt und doch neu - Wie wird man QRV mit Hell?", Martin Nähring (DF8FE), cq-DL, 2000,  nr. 11, pp. 807-808

"Der Hellschreiber - das erste Faxgerät", Radio-Scanner, Ausgabe 1/2002, www.funkempfang.de (used with permission)

"Hell begeistert", Lothar Deckert (DF1LU), cq-DL, 2002, nr. 4, p. 243

“Einstieg in Hellschreiber (1 + 2)”, Dieter Zimmermann  (DL2RR), Funkamateur, 1/2010, pp. 64-65, 2/2010, pp. 180-181 [official copies available in on-line shop of Funkamateur; copy on file]

"The Creed No. 10 Tape Teleprinter" [start-stop synchronization], A. E. Thompson, Electrical Communication (Int’l Western Electric Co.), Vol. 16, Nr. 4, April 1938, pp. 289-297

"L.M.T. Laboratories 7-Frequency Radio-printer", L. Devaux, F. Smets, Electrical Communication (quarterly journal of International Standard Electric Corp.), Vol. 17, No. 1, July 1938, pp. 22-34   

1938 German version is here

"Radio Teleprinting" [7-tone L.M.T. system], The Wireless World, 9 March 1939, p. 294

"Tape Facsimile Equipment RC-58-B", War Department Technical Manual TM 11-374, 23 February 1944, 145 pp. (courtesy Louis Gonzales, F5LG). This file is 109 MB! Lower-res file (66 MB) is here.

"RC-58 Facsimile Equipment" [BC-918] in “Surplus sidelights”, Gordon E. White, CQ: Amateur's Radio Journal, Vol. 24, nr. 3, March 1968, pp. 106-110

“Hellschreiber Teleprinter System Explanation” in "Surplus sidelights", CQ: Amateur's Radio Journal, Vol. 25, Nr. 11, November 1969, pp. 88-90

"World of Amateur Radio – News and views" [news brief on amateur radio use of Hellschreiber], Pat Hawker (G3VA), Wireless World, Vol. 84, Nr. 1506, February 1978, p. 294

"Chinese language becomes a bit faster”, Chris Moss, New Scientist, Vol. 77, February 1978, pp. 418-420  

"Hellschreiber - a rediscovery", Hans Evers PAØCX / DJØSA, Ham Radio, 12/1979.

"Hellschreiber" series of comments to the above 12/1979 Ham Radio article "Hellschreiber - a rediscovery" article, by E. Concklin, K6KA, Henry Plant, W6DKZ, and Stanley Cook, G5XB, Ham Radio, 3/1980 and 9/1980.

"Micro-hell", translation into English by Andrew (SM6MOJ) of article with same name by Klaas Robers, PAØKLS, Electron, 7/1980.

"Hellschreiber - what it is and how it works", S. Cook GB5XB, Radio Communication, 4/1981.

"The Hellschreiber System", pp. 11.1-11.3 in "Teleprinter Handbook",  A. G. Hobbs (G8GOJ), E. W. Yeomanson (G3IIR), Arthur C. Gee  (G2UK), Radio Society of Great Britain, 2nd ed., 1983, 350 pp., ISBN 0900612592  

“Making and baking those old-time components”, E. E. Murphy, IEEE Spectrum, Volume 26, Issue 3, March 1989, pp. 56-58

"German World War II communications receivers; Parts I-IV" (Hellschreiber on pp. 1-3), Dick Rollema, PAØSE, CQ Magazine, 8/1980, 12/1980, 5/1981, 8/1981.

“Enigma", [incl. PA0AOB Hellschreiber] D.W. Rollema (PA0SE), Wireless World, Vol. 89, Nr. 1569, June 1983, p. 49-54 

"Hellschreiber – The Siemens Lochstreifensender", Hugh Skillen, p. 118 in "The Enigma Symposium 1995", ISBN 0951519077, 160 pp.

“Long delay echoes on tape”, Technical Topics in RadCom Radio Communication, January 1998, pp. 58-59

"Hellschreiber Modes - Technical Specifications", Murray Greenman, ZL1BPU, 1998.

"The "New" HF Digital Modes", Steve Meltz, N2QLQ, QST, 4/1999.

"Let's see you in Hell!" Murray Greenman, ZL1BPU, QST, 1/2000 (used with permission).

“Resurgence of the Hellschreiber?“, “Technical Topics” in RadCom Radio Communication, May  2000 pp. 55-56

"A History of Hellschreiber", Murray Greenman ZL1BPU, 09/2001 (used with permission).

"The Hellschreiber Machine", Dave PICK, G3YXM, The World of LF.. News, 6/2002 (about Dick Rollema, PAØSE using a Hell Feldfernschreiber on 136 kHz).

"Hellschreiber history", Murray Greenman, ZL1BPU, 8/2003 (used with permission)

"Hellschreiber", RSGB Handbook, 8th ed., 2005, Chapter 19 "Data Communications", p. 19.5

"What the Heck is Hell?", Robert Mazur (VA3ROM), APRS^® Thunder Bay, Vol. 1, no. 2, March 2009, pp. 7-9

"Hell op 80 meter", CQ-PA, Vol. 25, nr. 47, November 1976, p. 1047 (courtesy Gerard Wolthuis, PA3BCB) 

"Hellschreiber - een herontdekking", Hans Evers PAØCX/DJØSA, Electron,  nr. 6, June 1977, pp. 297-303 (courtesy Gerard Wolthuis, PA3BCB)

"Het Hell-verreschrijfsysteem" Rob ten Wolde, Electron, 6/1977

“Hell”, Reflecties door PAoSE, Dick Rollema (PA0SE), Electron, nr. 7, July 1977, p. 349 (courtesy Gerard Wolthuis, PA3BCB)  

"Hell op de twee-meter-band in alle modes" H. Dikker, PEØHGD, Electron, 2/1978

“Hellschrijven met autostart” [Hell-2 GL], Reflecties door PA0SE, Dick Rollema (PA0SE), Electron, nr. 5, May 1979, p. 313 (courtesy Gerard Wolthuis, PA3BCB)

“Hell allerlei”, Reflecties door PA0SE, Dick Rollema (PA0SE), Electron, nr. 10, October 1979, p. 664 (courtesy Gerard Wolthuis, PA3BCB)

"Apple-Hell",  Reflecties door PA0SE, Dick Rollema (PA0SE), Electron, nr. 11, November 1979, pp. 736-737 (courtesy Gerard Wolthuis, PA3BCB)

“Micro-Hell”, Klaas Robers (PA0KLS), Electron, nr. 7, July 1980, pp. 389-392 (courtesy Gerard Wolthuis, PA3BCB)   [English translation provided by Andrew, SM6MOJ]

“Amerikaans Hell system” [RC-58B, BC-908B, BC-918B], Reflecties door PAoSE, Dick Rollema (PA0SE), Electron, nr. 7, July 1980, p. 382

"PAØMJS maakte zelf een mechanische hellontvanger", Dick Rollema (PA0SE), Electron, nr. 10, October 1980, pp. 557-559 (courtesy Gerard Wolthuis, PA3BCB)

"Een CW-Hell interface", Klaas Robers, PAØKLS, Electron, 12/1980

"Laagfrequent filter voor Hell en CW", Electron, 6/1981

“Hellschrijven”, Reflecties door PA0SE, Dick Rollema (PA0SE), Electron, nr. 11, November 1981, pp. 591-592 (courtesy Gerard Wolthuis, PA3BCB)

"Hellschrijvende zendamateurs onmoeten elkaar ten huize van PAoAOB", [group photo at annual Hell Meeting 1980], Electron, nr. 3, march 1981, p. 169 (courtesy Gerard Wolthuis, PA3BCB)

"Hell naar de maan en terug" [moon bounce],  Dick Rollema (PA0SE), Electron, nr. 4, April 1982, pp. 182-183 (courtesy Gerard Wolthuis, PA3BCB)

"Schrijftoestel voor ontvangst van hell- of morsesignalen", Martien Schouten, PAØMJS, Electron, nr. 5, May 1982, pp. 239-245

“Hellschrijven”, Reflecties door PA0SE, Dick Rollema (PA0SE), Electron, nr. 8, August 1982, pp. 404-405 (courtesy Gerard Wolthuis, PA3BCB)

"Hell-zendertje voor zelf-nabouwen", E. Leefsma, PAØKTV, Electron, nr. 12, December 1982

"Hellschrijven wint terrein", Dick Rollema (PA0SE), Electron, nr. 2, February 1983, pp. 73-76  (courtesy Gerard Wolthuis, PA3BCB)

“Hellzender van PA3AFD”, Reflecties door PA0SE, Dick Rollema (PA0SE), Electron, nr. 4, April 1983, p. 175 (courtesy Gerard Wolthuis, PA3BCB)

"Nog een hell-systeem", A. van Ooijen, PE1AQB, Electron, 8/1983, p. 417 [optical Hell, ZETFAX]

"Schrijven over hellschrijven", C. Grauwelman, PA3AFD, Electron, 2/1984 

“Hellschrijven”, Reflecties door PA0SE, Dick Rollema (PA0SE), Electron, nr. 11, November 1984, p. 684 (courtesy Gerard Wolthuis, PA3BCB)

“Hellschrijven”, Reflecties door PA0SE, Dick Rollema (PA0SE), Electron, nr. 7, July 1987, p. 341-342 (courtesy Gerard Wolthuis, PA3BCB)

“Hell software voor Acorn and C64/C128”, Reflecties door PA0SE, Dick Rollema (PA0SE), Electron, December 1987, pp. 622

"Radiomodem voor Hell, Morse en RTTY", Koos Fockens, PAØKDF, Electron, 10-12/1986  [courtesy Koos, PA0KDF]

“Dr. Rudolf Hell 85 jaar”, Reflecties door PA0SE, Dick Rollema (PA0SE), Electron, February 1989, p. 64  (courtesy Gerard Wolthuis, PA3BCB)

“Langzame Hellschrijver voor 80 en 40 meterband (deel 1 + 2)” [homebuilt hardware-implemented Hellschreiber sender + TX and mechanical printer],  F.A.O. Eenhoorn (PA0ZR), Electron, December 1989, pp. 630-633, January 1990, pp. 19-22  (courtesy Gerard Wolthuis, PA3BCB)

“Hellschrijven”, Reflecties door PA0SE, Dick Rollema (PA0SE), Electron, nr. 5, May 1991, pp. 238-239 (courtesy Gerard Wolthuis, PA3BCB)

"Luisteren met Frits", Frits, column "Wondere wereld van de Radio", date unknown, probably in Radio Amateur Magazine (RAM) or Break-Break [courtesy Gerard Wolthuis, PA3BCB].

"Laagfrequentfilter van ON4ASZ voor telegrafie en hellschrijven”, Reflecties door PA0SE, Electron, January 1992, pp. 5-6

"Hellschrijver voor zelfbouw (deel 1-5)", (description of home-built Feld-Hell of Martinus Rooth (PA0MPR) and A. Rooth-Bemms (PA0ARB)), Bastiaan Edelman (PA3FFZ), CQ-PA, 2/1994, pp. 32-34, 3/1994, pp. 63-64, 4/1994, pp.  97-98. 5/1994 , pp. 121-122, 12/1994, pp. 322-325

“Een passief laagfrequentfilter voor de ontvangst van telegrafie”, Roelof Bakker (PA0RDT), Electron, January 1997, pp. 15-20 (incl. PA0KLS CW/Hell filter)

“Mode HELL, zelfbouw (deel 1-2)”,  Bastiaan Edelman (PA3FFZ), CQ-PA, 10/1997, pp.  348-349 and 11/1997, pp.  385-387

“Hell” [part of digi-mode discussion], Arend Harteveld (PA1ARE), Electron, nr. 5, May 2000, pp. 180-181 (courtesy Gerard Wolthuis, PA3BCB) 

"Feld Hell Schreiber", Peter Zijlstra, PAØPZD, Surplus Radio Bulletin, nr. 24, 2001, pp. 5-11 (used with permission from the author and from the Surplus Radio Society, kindly arranged by Gerard Wolthuis, PA3BCB).

”Felldhell op de Hell80”, Arie van Ooijen (PE1AQB), Electron, April 2006, p. 185

"Voici "des machines à écrire" pour télégraphier soi-même de son domicile" [machines for teleprinting yourself at home], Paul Lucas, La Science et la Vie, No. 209, November 1934, pp. 406-410.

"Le téléimprimeur Siemens-Hell" [French translation of “Siemens-Hell-Schreiber“, SH 6592], Siemens-Halske, Berlin-Siemensstadt, 1937, 7 pp., SH 6805, 2. 9. 37 T.

"Un Convertisseur RTTY de surplus - le BC 908B" [modification of the BC908B (amplifier/filter unit of the RC-58B system with optical scan + Hellschreiber printer) for RTTY], J.P. Vauchelle (F5QE), Radio-REF, November 1969, pp. 729-733.

"Le Feldfernschreiber "une messagerie trop inteligente", Aimé Salles, Bernard Gelé, T.S.F. PANORAMA, Nr. 7, 1990, pp. 12-15

"La télégraphie Hell  - Hier et aujourd’hui, le Hellfernschreiber" [incl. the source-code of Apple II software by PA0KLS], F5KR (radio-club de la Base Aérienne 721, Rochefort), Radio-REF, no. 5, may 1983, pp. 535-540.

"Le Hellschreiber",  Bernard PAUC (F9ZB), Radio-REF, no. 695, December 1997, pp. 25-27.   

"Le Hellschreiber ? Pourquoi pas…",  Bernard PAUC (F9ZB), Radio-REF, no. 713, July/August 1999, pp. 29-31.

"Le Hellschreiber et ses modes dérivés" [Hellschreiber and derived modes], Pascal Bimas (F1ULT), Mégahertz Magazine, nr. 229, April 2002, pp. 40-44.

"Le Feld-Hell… mais c’est très simple !", Pascal Bimas (F1ULT), Mégahertz Magazine, nr. 232, July 2002, pp. 28-32. 

"Le retour du Hellschreiber", Murray Greenman (ZL1BPU), translated and adapted by Pascal Bimas (F1ULT), Radio-REF, no. 751, January 2003, p. 34-38.

"Comment démarrer en Hellschreiber" [how to get started with Hellschreiber], Pascal Bimas (F1ULT), Mégahertz Magazine, nr. 241, April 2003, pp. 24-30.

"Le Hellschreiber à multitonalités", Pascal Bimas (F1ULT), Radio-REF, no. 757, July/August 2003, pp. 37-43.

"Notes pour les Débutants en Hellschreiber" [notes for beginners with Hellschreiber], Pascal Bimas (F1ULT), Mégahertz Magazine, nr. 251, February 2004, pp. 30-36.

"Initiation aux modes digitaux", Murray Greenman (ZL1BPU), translated and adapted by Pascal Bimas (F1ULT), Radio-REF, no. 767, June 2004, p. 22-27

 "Le PSK-Hell et le FM-Hell", Pascal Bimas (F1ULT), Mégahertz Magazine, nr. 258, September 2004, pp. 42-46.

"Les modes digitaux et autres MGM en HF" , Pascal Bimas (F1ULT), RADIO-REF, No. 782, November 2005, pp. 33-44 [digi-modes; Hell on pp. 39-40].

"Le mode Hellschreiber", Jean-Louis Siebert (F1AGW), Ham-Mag, Nr. 8, 17 November 2008, pp. 10-13

"Telegrafía Hell (1.a & 2.a parte)", Manuel Santos-Greve (EA4BVZ), Jan Smeets (EA3DPB), Radioaficionados, Vol. 34, 1983, No. 362, pp. 317-320, No. 363, pp. 386, 387 (courtesy Juan Martin/URE)

"Telegrafía Hell", Jan Smeets (EA3DPB), Radioaficionados , Vol. 35, March 1984, pp. 172-173  (courtesy URE)

"Telegrafía Hell: El teletipo Siemens-Hell 80", Jan Smeets (EA3DPB/ ON4ASZ), Radioaficionados, Vol. 35, April 1984, pp. 232-234 (courtesy URE)

“La Hellschreiber”, Jon Iza (EA2SN), Radioaficionados, no. 10, 1998, pp. 43-46 (courtesy URE)

“Hellschreiber (J2C) con targeta de sonido”, Valentin Alonso (EA4CBH), Radioaficionados, no. 10, 1999, pp. 56-57 (courtesy URE)

"Hellschreiber: un modo de comunicaciones interesante", Gustavo Cotella (LU2HC), 4 pp.

"El sistema telegráfico Hell", Xavier Paradell (EA3ALV), Revista CQ, April 2000, pp. 19-23 (courtesy Jan Smeets, ex-ON4ASZ/EA3DPB)
 

"Hell-trafik med Apple", Klaas Robers (PA0KLS), SARTG-News, Nr. 45, 1982, pp.39-41

"Hell", Chapter 11, pp. 122-124, in "Amatørradio Teletype", Karsten Jensen, Kenneth Christensen (eds.), E.D.R. Radioamatørernes Forlag ApS, 1983, ISBN 8785149047  (courtesey Michael, OZ8NM)  

"Micro - HELL med Apple II", translation of “Micro-Hell” , Klaas Robers (PA0KLS), Electron, nr. 7, July 1980, pp. 389-392) by A. Vialle (SM6KST/PA0GAY), edited by Andrew Lovell (SM6MO), SARTG-News, Nr. 49, 1983, pp 22-26 (courtesy Michael, OZ8NM) 

"Att koppla in Hellskrivaren till din transceiver (och dator)", Andrew Lovell (SM6MOJ), SARTG-News, Nr. 54, 1985, pp 42 

”Överföringshastighet och bandbredd vid Hellskrift;Inkoppling av Hellskrivare till radiosändare; Kompatibilitet mellan Hell Feldfernschreiber och Hell-80; Första Hell-80 QSO i Sverige”, Andrew Lovell (SM6MOJ), HELL-spalten [Hell column] in SARTG-News, Nr. 55, 1985, pp. 44-46  

"Renovering av Siemens Hell Feldfernschreiber”, Andrew Lovell ( SM6MOJ), SARTG-News, Nr. 56, 1985, pp. 41-43; alo appeared in QTC Amatörradio, 11/1985, pp. 429 etc. 

"Distansrekord på Hellskrift, Hell contest, Smalbandigt audiofilter", Andrew Lovell (SM6MOJ), "Hell spalten" [Hell column] in SARTG-News, Nr. 58, 1986, p. 26 

"DAFG Hell Contest 1986, Hellskrift på 70 cm med Mitsubishi FM-25", Andrew Lovell (SM6MOJ), "Hell spalten" [Hell column] in SARTG-News, Nr. 59, 1986, p. 48 

"DAFG Hell Contest, Hellskrift på 2 meters bandet, nya regler för DAFG Hell Diploma", Andrew Lovell (SM6MOJ), "Hell spalten" [Hell column] in SARTG-News, Nr. 60, 1986, p. 49 

"Hellskrift på Commodore C-64, Distansrekord, Moon Bounce, Ny Hell Station, DAFG Contest, DARC Contest, Hell-80 Demonstration, Hellskrift på kinesiska", Andrew Lovell (SM6MOJ), "Hell spalten" [Hell column] in SARTG-News, Nr. 65, 1987, pp. 27-28 

"CW/Hell-skrift demodulator", Jan-Martin Nøding (LA8AK), Amatørradio,  nr. 41, February 1987, Nr. 41, pp. 41-43, Nr. 42, March, pp. 66-69

"Hellskrift på Commodore C-64, Helldiplom", Andrew Lovell (SM6MOJ), "Hellspalten" [Hell column] in SARTG-News, Nr. 66, 1988, pp. 32-33 

"Simulering av Hellschreiber på PC", Sigfus Jonsson (LA0BX), 25 November 1990

”Hell med C-64”, Andrew Lovell, "Hellspalten" [Hell column] in SARTG-News, Nr. 83, 1992, pp. 34, 35 

"Hell frá Hell; Stafrænar sendingar, Feld Hell", Sigfus Jonsson (TF5SJ/LA0BX), CQ TF (magazine of the Icelandic Amateur Radio Society, IRA), Vol. 17, no. 3, July 1999, pp. 2, 13, 15 [includes translation to English by Frank Dörenberg, N4SPP] 

“Hell fréttir” [Hell news], Sigfus Jonsson (TF5SJ/LA0BX), CQ TF, Vol. 17, no. 4, September 1999, p. 19 [includes translation to English by Frank Dörenberg, N4SPP]

"Nowa emisja Hell ?", Piotr Herko (SP5XSB), Polski Związek Krótkofalowców Magazyn, nr 2, (421), 1998, pp. 24-26  (courtesy Piotr Herko (SP5XSB))

"Hell QSO", Piotr Herko (SP5XSB), Magazyn Krótkofalowców QTC, nr. 6, June 1998, p. 162 (courtesy Piotr Herko (SP5XSB))

 "Emisje: HELL, PSK31, MT63", Piotr Herko (SP5XSB), Polski Związek Krótkofalowców, nr. 6, 2000, pp. 26-29 (courtesy Piotr Herko (SP5XSB))

"Dálnopisná technika systému HELL", Rudolf Hanuš, Nakladatelství dopravy a spojů (publ.), Prague, 1974, 117 pp. 

"Overhaul of the Hell Feldfernschreiber Motor-Generator", Frank Dörenberg, N4SPP, 3/2009.

"Tuning of the Hell Feldfernschreiber Tone-Generator and Filter", Frank Dörenberg, N4SPP, 4/2009

"Schematic, Component-Layout and Connector Pin-Outs of the Hell Feldfernschreiber", Frank Dörenberg, N4SPP, 15-April-2009.

"Characteristics and Circuit Diagram of the Hellschreiber Model 72b/c "GL"", Frank Dörenberg, N4SPP, 4/2009.

"Overhaul of the Hell Feldfernschreiber Gearbox", Frank Dörenberg, N4SPP, in progress.