Encyclopedia Dubuque
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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 1911-12 Dubuque City Directory listed the corner of Jones and Main.
The 1915 Dubuque City Directory listed 170 Jones.
The 1923 through 1970 Dubuque City Directory listed 210-20 Jones and the name had become Midland Laboratories.
The 1972 through 1977 Dubuque City Directory listed 210 Jones.