Tommy Rettig Jeff Miller Actor Jan Clayton Ellen Miller Actor George Cleveland Gramps Actor Jon Provost Timmy Claussen Actor George Chandler Uncle Petrie Martin Guest Star Kelly Junge Jr. Scott Richards Actor Joey D. Vieira Porky Brockway Actor Florence Lake Jenny Guest Star Ruth Robinson Lisa Guest Star Cloris Leachman Ruth Martin Actor Arthur Space Dr. Frank Weaver Guest Star Grandon Rhodes Dr. Stevens Guest Star Ray Teal Jim Teal Guest Star Jon Shepodd Paul Martin Actor Carla Balenda Miss Hazlit Guest Star J. Anthony Hughes Mr. Wilson Guest Star George Selk Jed Salk Guest Star House Peters Jr. Sheriff Jim Billings Guest Star Claire Carleton Beatrice Guest Star Phil Tead Hobo Guest Star Robert Maxwell Executive Producer Jack Wrather Executive Producer Claire Kennedy Writer Sumner Arthur Long Writer Paul David Writer Michael Cosgrove Writer Ed Adamson Writer T.C. Lengyel Writer J.E. Selby Writer Miriam Geiger Writer Robert Lees Writer Eric Knight Writer Philip Ford Director Lesley Selander Director James S. Henerson Writer R. G. Springsteen Director Maurice Geraghty Director John English Director Pauline Stone Writer Ralph Murphy Director