Ernst Ruhmer (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Ernst Ruhmer" in English language version.

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"Pioneer Experiments of Eugene Lauste in Recording Sound" by Merritt Crawford, Journal of the Society of Motion Picture Engineers, October 1931, page 644.

"Fernsehleute im Spannungsdeld zwischen Fortschritt und Reaktion" by Manfred Hempel (in German), included in Die Anfänge des Deutschen Fernsehens, 1991, page 16.

"Herstellung von photographischen Bildern durch Belichtung von elektrisch leitenden, mit Selen Aberzogenen Platten", Chemiker-Zeitung (in German), June 15, 1904, page 578.
"The Properties and Applications of Selenium", Radium and Other Radioactive Substances by William J. Hammer, April 17, 1903 lecture, page 57.
Cover page Technical World, March 1905.
"Correspondence: Wireless Telephony" (October 30, 1902 letter from Ernst Ruhmer), The Electrician, November 7, 1902, page 111.
Wireless Telephony In Theory and Practice by Ernst Ruhmer, 1908, pages 49-59.
Ruhmer (1908) page 134
Goldsmith, Alfred N. (1918) Radio Telephony, pages 46-48
Ruhmer (1908) page 118
Ruhmer (1908) pages 166-167
"Ruhmer's Multiplex Telephony", Technical World, September 1911, page 128.
Wireless Telephony In Theory and Practice by Ernst Ruhmer (translated from the German by James Erskine-Murray), 1908.
Ruhmer (1908) page 39
"The Photographophone" by Ernst Ruhmer, Scientific American, July 20, 1901, page 36.
"Another Electric Distance-Seer", Literary Digest, September 11, 1909, page 385.
"Seeing by Wire", Industrial World, January 31, 1910, pages viii-x (reprinted from the London Mail).