Among his teachers were Richard Diebenkorn, Edward Corbett, and James Budd Dixon.
[2] During the Korean War, McClintock served as an illustrator and instructor in the U.S. Army and was afterwards stationed in Alaska (1953–55).
In the 1980s, he left that business and got a job with the San Francisco Maritime Museum, where he had previously been a volunteer.
[2] Although he has made a number of paintings, McClintock is best known for his prints, which range from lithographs to drypoint etchings and mezzotints.
[1] His work was included the Museum of Modern Art (New York)'s 1954 survey, "American Prints of the 20th Century," at which time he was credited, along with Will Barnet and Ralston Crawford, with helping to bring color lithography in America to a par with work being done in Europe.