In 1991 the LCHS purchased the original office and headquarters of Minnesota Mining and Manufacturing (3M).

It was here, in 1902, that five businessmen embarked on a mining venture which laid the foundation for a successful global corporation. Exhibits include:

• Attorney John Dwan's recreated office.
  
• A history of the company including photos, artifacts, and documents.
  
• A "lab" area representing research and development, product diversification and growth.
  
• A "hands on", interactive program of technology applications.

The orginial buliding at 203 Waterfront Drive, has been restored and is on the National Register of Historic Places.