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William Coolidge: Vacuum Tube for X-Ray Production, 1926

Seeking Verification

Below, you will find correspondence seeking to confirm—as well as acknowledging—that Coolidge was primarily responsible for development of the Coolidge Tube. At right are letters concerning Sub-Committee membership to investigate the Coolidge Tube.

CSA Secretary to Rice
Committee Secretary Letter to E.W. Rice, Requesting confirmation of Coolidge as the primary developer of the Coolidge Tube, 2/4/1926. (316K)

CSA Secretary to Whitney
Committee Secretary Letter to Willis R. Whitney, Requesting confirmation that Coolidge is primarily responsible for development of the Coolidge Tube, 2/4/1926. (504K)

Willey to Hoadley
L.M. Willey Letter to George A. Hoadley, Assuring that Coolidge was the guiding thought in the development of the Coolidge Tube, 2/6/1926. (685K)

Fredericks to Hoadley
H. Fredericks Letter to George A. Hoadley, Assuring that the Coolidge Tube is unquestionably the primary conception and design of Coolidge alone, 2/6/1926. (323K)

CSA Secretary to Fredericks
CSA Secretary Letter to H. Fredericks, Acknowledging the confirmation of Coolidge's work on the Coolidge Tube, 2/9/1926. (467K)

Rice to Hoadley
E.W. Rice Letter to George A. Hoadley, Endorsing the statement that the Coolidge Tube is primarily the work of Dr. Coolidge, 2/24/1926. (219K)

CSA Secretary to Whitney
CSA Secretary Letter to Willis R. Whitney, Requesting personal confirmation that the tube was the personal invention of Doctor Coolidge, 4/14/1926. (500K)

Whitney to CSA Secretary
Willis R. Whitney Letter to CSA Secretary, Confirming that Coolidge is primarily and solely responsible for this X-Ray tube, 4/16/1926. (647K)