I know that this thread is old, but the mostly widely used strain on the East Coast and in the Midwest before Prohibition was the Christian Schmidt strain. A descendent of that strain is available from Wyeast as Wyeast 2272 North American Lager. Wyeast 2035 is a Midwestern descendent of the Christian Schmidt strain.
Wallerstein was a brewing research laboratory in New York that also had a culture collection; hence, there are many Wallerstein strains. Mark Carpenter, the head brewer at Anchor, recently stated that Anchor acquired their current strain in 1974. It's an old Wallerstein strain, which adds credence to the theory that Anchor's yeast is derived from the Christian Schmidt strain. The Christian Schmidt strain was definitely in the Wallerstein culture collection.