Gibson was one of 11 All-American football players to appear in the 1930 film Maybe It's Love.
After his football career, Gibson earned his Ph.D. in geology from the University of Minnesota and became a geology professor at Carleton College, where he also coached the football team from 1934 to 1938. In 1936, Carleton went 6–1 with the only loss coming to Iowa. His coaching record at Carleton was 21–13–2.
He later moved to Midland, Texas, where he was a geological consultant for oil companies. For his work in the field, Gibson was inducted into the Petroleum Museum Hall of Fame in 2001.
Gibson died at his home in Midland, Texas on August 19, 2004, at the age of 98.