Lynn served for many years on the NCBA Board of Directors, chairing several committees before serving his term as NCBA president. He also served on the Board of Directors of the Montana Stock Growers Association from 1988 to 1992, and then as MSGA President from 1996 to 1998.
Lynn was also a member of the Montana Public Lands Council, serving as chairman and delegate to the National Public Lands Council and as NCBA Federal Lands chairman.
Lynn attended grade school at the Tampico school and graduated from Glasgow High School in 1969. He earned a bachelor's degree in Agricultural Business from Montana State University. He married the former Debby Thompson in 1971, and they raised their children on the family ranch.