Encyclopedia Dubuque
www.encyclopediadubuque.org
DUBUQUE CHEMICAL COMPANY. Started around 1908, the company closed in 1913.
The 1911-12 Dubuque City Directory listed 897 Main.
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Source:
Burggraff, Mike. 2010 Update to the Antique Bottles of Iowa. Fairfield, Iowa: Frontline Printing & Design
