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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.


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AMERICAN PETROLEUM COMPANY. The 1939 Dubuque City Directory and 1942 Dubuque Classified Business Directory listed 105 Locust.

The 1945 Dubuque City Directory listed 105 Locust and 2103 Jackson.

The 1955 Dubuque City Directory listed 2103 Jackson.

The 1957 Dubuque City Directory listed 105 Locust.