(b.) Unknown
Citations:
Courtesy of Computer50.org
(b.) June 20, 1922 — (d.) April 21, 2012
(b.) December 25, 1944
(b.) 1915 — (d.) January 1, 1992
Citations:
(b.) June 15, 1906 — (d.) October 8, 1985
(b.) October 20, 1878 — (d.) May 13, 1929
Photo: Testing · Unknown
(b.) December 5, 1924
Citations:
Courtesy of Microsoft Author Database
Courtesy of Northwestern University Library
(b.) Unknown
(b.) Unknown