- MEADOWS WHITE FLINT GRANITE GRAIN MILLS.
- March 1960 Plant News.
- KEYSTONE TILLAGE IMPLEMENTS.
- KEYSTONE TILLAGE IMPLEMENTS
- KEYSTONE STEEL FRAME WINDROW HAY LOADER CATALOGUE.
- International Feed Grinder Catalogue.
- In the workspace.
- In the workspace governor display area.
- If you people like Woodward governors like Brad does, you're going to have a helluva good time working at Woodward.
- I.H.C. SERVICE LOCATIONS.
- First study the governor patents, then buy the real thing!
- February 1970 Plant News.
- DAIRYMAID CREAM HARVESTER CATALOGUE.
- CYRUS HALL McMORMICK. Inventor of the Reaper About 1830.
- CENTENNIAL OF THE REAPER. 1831-1931.