Collection "03 Individual Memorial Statements" (hdl 1813/17813), searched "Rahn".
Found: "Rahn, Otto", Memorial Statement, Cornell University Office of the Dean of the University Faculty, 1957. File Rahn_Otto_1957.pdf (221 KB). Permanent link https://hdl.handle.net/1813/18707 [web]
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Dates from the Singleton 2017 citation of it [web]: born 9 April 1881, died 26 September 1957. Weber Rare Books [web]: Professor of Bacteriology at Cornell 1927-1949. Illinois trustees record [web]: Assistant Professor at the University of Illinois from 1 September 1913.
Bearing: biography of the inventor (priority 4), and possibly how his colleagues saw the radiation work after his death.