Sperry's / Swede's was built by the Ward & Dickinson Dining Car Company of Silver Creek, NY. It was in various downtown locations, under various names, from 1933 to 1953.

A history from Jim Rees compiled at http://jim.rees.org/swedes/

A table of Ann Arbor Ypsilanti diners: (moved in 2008) http://www.nydiners.com/db/dblist.php And then scroll down to desired city.

Michigan business registration