After establishing himself as a photographer for Warner Bros, he went on to work in the same function with Alfred Kinsey at the Kinsey Institute for Research in Sex, Gender and Reproduction in Bloomington, Indiana from 1948 to 1956. He earned a Ph.D. in Clinical psychology from New York University. In The Intimate World of Abraham Lincoln, C. A. Tripp contends that Abraham Lincoln had erotic attractions and attachments to men throughout his life, from his youth to his presidency.
In the later years of his life, Clarence Tripp was a valuable source to researchers of adult-minor sexual attractions and relations.
Interviewed in Yorkshire Television's unsympathetic "expose" of Kinsey's techniques, Tripp portrays quite frankly the realities of Kinsey's research and his subjects. It becomes clear that Tripp is untroubled by the sexual diversity uncovered in part by his research photography with Kinsey.