"Encyclopedia Dubuque is the online authority for all things Dubuque, written by the people who know the city best.”
Marshall Cohen—researcher and producer, CNN
Affiliated with the Local History Network of the State Historical Society of Iowa, and the Iowa Museum Association.
KOHLMANN BROS. The 1909 Dubuque City Directory through the 1916-1917 White's Dubuque County Directory gave this business address as 2080 Couler.
The 1918 Dubuque and East Dubuque City Directory through the 1934 Dubuque City Directory listed the address as 2106 Central.
The 1939 Dubuque City Directory listed 15 E. 21st.