)In collaboration with Walter Kerr, he wrote "Yankee Doodle Boy", a musical about the life of Broadway showman George M. Cohan, which debuted to great success in Washington and received national media exposure along with the endorsement of Cohan himself.Again, Hollywood lifted this idea whole cloth without giving the authors credit, and subsequently released the film version, "Yankee Doodle Dandy", starring James Cagney.