A native Californian, Barron Postmus spent several years in Hawaii before returning to school at the Los Angles Art Center. A brief stint in the Army took him to Europe where he served as an illustrator. After his military service, he was hired as a technical illustrator by a large aerospace firm.

The next few years saw him promoted rapidly to graphics designer, and in 1968, Barron opened his own graphic design and illustration agency. Even then, he was working toward the day when oil painting would be his total profession, and in 1985, this became a reality. The results of his efforts can be seen today in fine galleries throughout the country as well as in private and corporate art collections.