Productivity Machines is based on research in technical, corporate, labor, and national archives in the United States and Germany; the primary sources on this website originate from many, but not all of these archives.
Charles Babbage Institute, University of Minnesota, Minneapolis, MN
IBM Corporate Archives in Somers, NY
Walter P. Reuther Library, Wayne State University, Detroit, MI
Hagley Museum and Library in Wilmington, DE
Harry S. Truman Library & Museum in Independence, MO
Productivity Machines 