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.
POSTAL TELEGRAPH-CABLE COMPANY
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POSTAL TELEGRAPH-CABLE COMPANY. The 1918 and 1929 Dubuque City Directory listed 335 Main.
The 1939 Dubuque City Directory listed 400-402 Main.
The 1941 Dubuque City Directory and 1942 Dubuque Classified Business Directory listed 490 Main.