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.
TRI-STATE INDUSTRIES INC.
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TRI-STATE INDUSTRIES INC. Founded in 1960, the company from 1967 through 1993 was located at 10 S. Main Street. The firm produced boat anchors and locks.
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Source:
"Directory of Dubuque Industries." Prepared by the Dubuque Industrial Bureau, 1967
Dubuque City Directory