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.
MIDLAND CHEMICAL LABORATORIES
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MIDLAND CHEMICAL LABORATORIES. The 1915 Dubuque City Directory listed 170 Jones as the address.
The 1923 and 1929 Dubuque City Directory listed 210 Jones.
The 1937 Dubuque Consurvey Directory listed 210-20 Jones.
The 1941 through 1968 Dubuque City Directory listed 210-20 Jones and the name had become Midland Laboratories.
