This is a photo op of Billy Carter (President Jimmy Carter's brother) along with identical twins, Jim and Jon Hager from Hee Haw's Season 9, Episode 16 aired on January 16, 1978.

This is the episode:

http://www.tv.com/shows/hee-haw/billy-carter-barbara-mandrell-larry-mahan-jimmy-henley-1135551/

Billy Carter was born William Anton Carter III on March 29, 1937 in Plains, Georgia, and was 13 years younger than his brother, President Carter.

He lived a rambunctious, but full life, enlisting in the USMC, and upon returning, took over the family peanut business while his brother immersed himself in politics. He was involved in several controversies throughout President Carter's term of office, including run-ins with the IRS, and at one point had to register as an agent of the Libyan government.

Billy had an image of a "Redneck," but was exceptionally well read and an industrious businessman. His famous contribution to the Carter era was his "Billy Beer," which unfortunately couldn't compete with the larger breweries.

Billy Carter died of pancreatic cancer (a disease which also took his sister and his mother) on September 28th, 1988 in Plains, Georgia.

The Hager brothers were identical twins who were regularly featured on Hee Haw.

This is a link to a YouTube tribute to them which includes a photo of Carter and the twins:

https://www.youtube.com/watch?v=hnfbSefFFIc

More Info: www.biography.com