Yost was the designer and inventor of the 1947 unloading auger, the catalyst for the development of Hesston Manufacturing in Hesston, Kansas. The device was used to unload grain from farm combines. The company's controlling stake was sold to Italian corporation Fiat Trattori in 1977. The remainder of the company was purchased in 1987 by the same firm. In 1991, a year after being established, AGCO Corporation purchased the rights to Hesston Manufacturing.
- "Obituaries (Lyle E. Yost)". Hutchinson News. April 7, 2012. Retrieved September 19, 2012.
- Voorhis, Dan. "Lyle Yost, founder of Hesston Industries, dies at age 99". The Wichita Eagle. Retrieved 29 October 2012.
- "Lyle E. Yost (obituary)". Broadway Colonial Funeral Home. Retrieved January 18, 2013.