Once a Doctor › Cast
Lorne Greene
Ben Cartwright
Michael Landon
Little Joe Cartwright
Pernell Roberts
Adam Cartwright
Dan Blocker
Eric "Hoss" Cartwright
Michael Rennie
Prof. Poppy
Ashley Cowan
Thomas Crippen
Elizabeth Rogers
Allie Lou
Bill Clark
Sam
Ray Teal
Sheriff Roy Coffee
Grandon Rhodes
Dr. Rob Keefer
John Barton
Townsman
Rex Andrews
Danny Borzage
John Breen