Encyclopedia Dubuque
"Encyclopedia Dubuque is the online authority for all things Dubuque, written by the people who know the city best.”
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Affiliated with the Local History Network of the State Historical Society of Iowa, and the Iowa Museum Association.
M. J. KNIPPEL COMPANY (THE)
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M. J. KNIPPEL COMPANY (THE). The 1922 telephone directory listed M. J. Knippel & Son at 458 Main.
The 1951 through the 1959 Dubuque City Directory listed The M. J. Knippel Company at 453 Main.