PersonHorace McMahon11 credits in the catalogue: acting.ActingMarie Antoinette1938Rabblerouser (uncredited)Bachelor Mother1939Dance Floor Official (uncredited)Another Thin Man1939MacFay's Chauffeur (uncredited)My Favorite Wife1940Truck Driver Giving Lift to Ellen (uncredited)Stage Door Canteen1943Horace MacMahonDetective Story1951Lt. MonaghanAbbott and Costello Go to Mars1953MugsyBlackboard Jungle1955DetectiveNaked City1958Lt. Mike ParkerNever Steal Anything Small1959O.K. MerrittThe Detective1968Capt. Tom Farrell