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In 1911 the company advertised that it manufactured plumbing and heating supplies and had a specialty in bath trap and double flush water closets. Forty workmen were employed. Until 1936, Frederick Kretschmer guided the company as its president.
From 1936 to 1944, Mrs. L. A. Kretschmer acted as President, being one of the few ladies to hold such a position during that era.
The 1970 through 1977 Dubuque City Directory listed the company at 220 E. 9th St.
In 1998, Kretschmer-Tredway was purchased. Now known as FIRST SUPPLY DUBUQUE, it became the first Iowa facility for the corporation. The successful facility continued to grow and in March 2007 relocated to its current location on Chavenelle Drive.
Source: "Chronology" Telegraph Herald, 1979 p. 15D