Abstract Contacts, undated, of F. Peter Ambrosiani, a professional mining engineer and 1938 graduate of the Michigan College of Mining and Technology (now Michigan Technological University) in Houghton, Michigan. Includes a notebook with handwritten entries for mining companies of Michigan's Upper Peninsula primarily with their chief officers, superintendents, engineers and agents listed. Probably associated with Ambrosiani's job with Jeffrey Manufacturing Company where he was the sales manager for...