Otto C. Geffken (1901–71) was an engineer at Vandercook & Sons and is named in at least one patent. The card, set in Kaufmann Bold and Stymie, is ca. 1938.
Geffken appears in catalogs and model brochures of the era such as this one at right. (R.L. Pelland, another engineer, is believed to be second from the left).
The card was sent to me by Paul Gehl, Curator of Rare Books, and Custodian of the John M. Wing Foundation on the History of Printing at the Newberry Library in Chicago. I was fortunate to spend a month at there as a short term fellow doing research for the second edition of my Vandercook book (in progress). Most Newberry fellowships require a PhD, however the Arthur and Lila Weinberg Fellowship for Independent Scholars and Researchers does not. I encourage other non-academics s to apply. The deadline for 2014 has past, but think ahead for 2015.