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.
NICHOLAS J. KOLF
From Encyclopedia Dubuque
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NICHOLAS J. KOLF. The 1890-91 Dubuque City Directory listed the northwest corner of 17th and Clay.
The 1913 Dubuque and Dubuque County Directory through the 1929 Dubuque City Directory stated that this business was located at 1400 Clay.
