Benjamin Franklin "Frank" McGrath was an American television and film actor and stunt performer who played the comical, optimistic cook with the white beard, Charlie B. Wooster, on the western series Wagon Train for five seasons on NBC and then three seasons on ABC. McGrath appeared in all 272 episodes in the eight seasons of the series, which had ended its run only two years before his death. McGrath's Wooster character hence provided the meals and companionship for both fictional trail masters, Ward Bond as Seth Adams and John McIntire as Christopher "Chris" Hale.

Wagon Train is an American Western television series that aired for eight seasons, first on the NBC television network (1957–1962) and then on ABC (1962–1965). Wagon Train debuted on September 18, 1957 and reached the top of the Nielsen ratings. It is the fictional adventure story of a large westbound wagon train through the American frontier from Missouri to California. Its format attracted famous guest stars for each episode appearing as travelers or residents of the settlements that the regular cast encountered. The show initially starred supporting film actor Ward Bond as the wagon master and Robert Horton as the scout.