After 1901, medical schools and state licensing boards began to routinely file information about its physicians with the AMA. The Matas Library has the print American Medical Directory and also the Journal of the American Medical Association which published obits and other personal information. Obits from 1804-1929 are indexed by the print 2 volument directory - Directory of Deceased American Physicians 1804-1929. For other biographical informaiton and later information from the AMA contact the National Library of Medicine's Historical Collections.
The first set of cards was published in 1993 as the two volumes Directory of Deceased American Physicians 1804-1929.
Available in the Matas Library - Ready Reference - ZWZ 112 D598 1993 v.1-v.2