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.
LINDSAY SOFT WATER OF DUBUQUE
LINDSAY SOFT WATER OF DUBUQUE. Lynn G. Lindsay, a young hydraulics engineer in Minneapolis, Minnesota, teamed with his brother, Fred, and a neighbor, Emmett Culligan, to begin experimenting with water conditioning devices. In 1925, Lynn Lindsay received the first of his many patents for automatic water softeners designed to meet the needs of the individual homeowner.
---
Source:
Wikipedia
The 1964 Dubuque City Directory listed Lindsay Soft Water Company at 1398 White.
The 1970 through 1977 Dubuque City Directory listed 35 E. 32nd.