Donna had to use a handkerchief
Donna Reed and Buster Keaton
Buster Keaton (October 4, 1895 – February 1, 1966).
Joseph Frank Keaton, known professionally as Buster Keaton, was an American actor, comedian, film director, producer, screenwriter, and stunt performer.
This famous silent screen star appears in two episodes of The Donna Reed Show. In A Very Merry Christmas (Season 1, Episode 14), he appears as the hospital janitor impersonating Santa Claus. The comic suited up during a three-minute silent routine during which the cameras were left rolling. It was reported that the crowd gathered behind the camera choked back laughter. Donna controlled hers by stuffing a handkerchief in her mouth.