Guest Stars Victor French as Isaiah Edwards Bonnie Bartlett as Grace Snider Co Starring Jonathan Gilbert as Willie Oleson Alison Arngrim as Nellie Oleson Brian Part as Carl Sanderson Kyle Richards as Alicia Sanderson Rance Howard as Simpson Richard Farnsworth as Wall Raymond Guth as Dixon Marshall Kent as Dr. Quimby Alex Sharp as Burman Uncredited Barney the Dog as Jack Cindy Moore as Tall Schoolgirl