Flashback Friday: 3M Birthplace in T.H. Recorded by Plaque
From the May 21, 1964 issue of the Two Harbors Chronicle & Times
The birthplace of Minnesota Mining & Manufacturing Co., now a titan in American industry, was recorded for posterity in Two Harbors last Thursday with the unveiling of a plaque on a building housing the original office of the company on the northwest corner of the intersection of 2nd Ave. and 6th St. in Two Harbors.
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