Encyclopedia Dubuque
"Encyclopedia Dubuque is the online authority for all things Dubuque, written by the people who know the city best.” —Marshall Cohen, CNN
Affiliated with the Local History Network of the State Historical Society of Iowa, and the Iowa Museum Association
G. F. KAUFFMANN
G. F. KAUFFMANN. The 1899-1900 Dubuque City Directory through the 1918 Dubuque and East Dubuque City Directory gave the address as 976 Main.
The 1922 Dubuque Telephone Directory through the 1937 Dubuque Consurvey Directory listed 378 Main when the company was listed as a wholesaler.