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.
FERDINAND MERTZ
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FERDINAND MERTZ. The 1873-74 Dubuque City Directory listed the address as the east side of Iowa 2 north of 7th.
The 1875-1876 through 1886-87 Dubuque City Directory gave the address as 744 Iowa.
The 1909 Dubuque City Directory gave the address as 2245 Washington.