On this date in Minnesota History: June 13

June 13, 1902 – 3m’s founders signed papers in Two Harbors, Minn., making Minnesota Mining and Manufacturing a corporation.

http://en.wikipedia.org/wiki/3M

3M Headquarters in St. Paul, Minn.

Photos taken by Pamela J. Erickson. Released into the public domain June 12, 2013,
as long as acknowledgement included.