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.
CULLIGAN WATER CONDITIONING OF DUBUQUE
CULLIGAN WATER CONDITIONING OF DUBUQUE. Culligan is an international water treatment products company headquartered in Rosemont, Illinois. Culligan specializes in water softeners, water filtration systems and bottled water for residential and office applications.Culligan was founded in a blacksmith shop in Northbrook, Illinois in 1936.
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Source:
Wikipedia
The 1964 Dubuque City Directory listed 464 W. Locust.
The 1977 Dubuque City Directory listed 1166 Main.
The 1989 Dubuque City Directory listed only a telephone number.