North Dakota Institute for Regional Studies
Institute for Regional Studies
PO Box 5599
Fargo, ND 58105-5599
0.2 linear ft.
Papers inlcude various U.S. and foreign patents and promotional materials for some of Hoiland’s inventions including a wild oats separator, valves, lignite grate, freight car door, helicopter, cow trainer, highway guide, and fan for explosive engines.