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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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Key case. Photo courtesy: Bob Reding

MID-CONTINENT PETROLEUM CORPORATION. The 1934 Dubuque City Directory listed stations at 8th and Central, 8th and Iowa, 19th and Central, 32nd and Central, Julien and Nevada, and 2nd and Locust.

The 1939 Dubuque City Directory through 1948 Dubuque Classified Business Directory listed the office at 400 E 3rd.