Description: Papers of Virgil Dean Winkler (1917-2007), B.A., B.S., 1938, M.S., 1939, and Ph.D. 1941 include a print copy and CD-Rom of a memorial biography authored by his family and containing narrative of his growing up in Mackinaw, Illinois, attendance at the University of Illinois, work for the Illinois State Geological Survey, his move to Venezuela for work in the petroleum industry (1941-87) and subseqeunt teaching at the Universidad Central de Venezuela (1988-2002), and containing a list of his technical reports and family photographs.