Abstract Collection includes correspondence relating to personal and family matters, Aero Clubs of Vermont and America, American Engineering Council (1924-1933), American Society of Mechanical Engineers (1913-1933), U.S. Naval Consulting Board (1917), Hartness's Gubernatorial Campaign and term (1920-1922), machine tool manufacture in France, Germany, Great Britain, and the U.S. (1910-1930), lathes and thread cutting tools, and screw thread standardization (1918); together with manuscript, typescript,...