Michael Landon Charles Ingalls Actor, Executive Producer Karen Grassle Caroline Ingalls Actor Melissa Gilbert Laura Ingalls Wilder Actor Melissa Sue Anderson Mary Ingalls Kendall Actor Karl Swenson Lars Hanson Actor Richard Bull Nels Oleson Actor Katherine MacGregor Harriet Oleson Actor Alison Arngrim Nellie Oleson Dalton Actor Jonathan Gilbert Willie Oleson Actor Kevin Hagen Dr. Baker Actor Dabbs Greer Rev. Robert Alden Actor Charlotte Stewart Eva Beadle Simms Actor Merlin Olsen Jonathan Garvey Actor Patrick Laborteaux Andy Garvey Actor Hersha Parady Alice Garvey Actor Nicolas Coster Lansford Ingalls Guest Star Virginia Kiser Charlotte Holbrook Guest Star Matthew Labyorteaux Albert Ingalls Guest Star Katy Kurtzman Young Caroline Guest Star Sorrell Booke Mr. Watson Guest Star Adam Gunn Harold Watson Guest Star Lindsay Greenbush Carrie Ingalls Actor Sidney Greenbush Carrie Ingalls Actor David Considine Peter Ingalls Guest Star Gregg Forrest Henry Holbrook Guest Star Robin Muir Polly Ingalls Guest Star Kristi Jill Wood Elizabeth Ann Holbrook Guest Star Arthur Heinemann Writer William F. Claxton Director