Encyclopedia Dubuque
"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.
TRAPP BROTHERS
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TRAPP BROTHERS. The 1909 Dubuque City Directory and the 1913 Dubuque and Dubuque County Directory gave the address as 2394 Couler.
The 1915 Dubuque City Directory listed 2386 Couler.
The 1916-1917 White's Dubuque County Directory through the 1923 Dubuque City Directory listed 2400 Couler.