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After completing his studies, he was an inking assistant for his older brother, Dan Barry, who drew the Flash Gordon comic strip. Later, he pencilled the strips from time to time, and he often did uncredited stand-in jobs for his brother.
Barry frequently used pencil artists on the strip, working primarily as an inker, though he often drew entire stories when time permitted). Pencillers included George Olesen, Joe Giella, Bob Forgione, André LeBlanc and Carmine Infantino.
Barry retired from the newspaper strip in 1994.