Collection, 1925-1989, consists mainly of logbooks and notebooks kept by Hiram Hamilton Maxim for his boats, GANNET and GANNET II (built 1939), as well as several logbooks kept by his father, Hiram Percy Maxim. It also contains Hiram Hamilton’s notes and newspaper articles about improvements made to a hand-held Radio Direction Finder in addition to manuscripts and pictures for “Precision Coastal Piloting” and “Miscellaneous Piloting Notes and Other Useful Items”.