Corey Stuart

Plot and themes

• Original series stars Jan Clayton (as Ellen Miller—top left), George Cleveland (as Gramps—top right), and Tommy Rettig (as Jeff Miller—at bottom with Lassie)
• From left to right—George Chandler (as Uncle Petrie), Jon Shepodd (the original Paul Martin), Jon Provost (as Timmy Martin) and Cloris Leachman (the original Ruth Martin) during season 4 when the show transitioned from the Millers to the Martins
• Hugh Reilly and June Lockhart took over as Paul and Ruth Martin from 1958 to 1964 (seasons 5–10).
• After 10 seasons on the farm with the Millers and the Martins, the series shifted to Lassie's adventures with the U.S. Forest Service during seasons 11–16, the bulk of that time featuring Robert Bray as Ranger Corey Stuart.
• Season 17—the final CBS season—saw Lassie on her own, getting into different adventures each week. In seasons 18 and 19 (with the series airing in syndication), Lassie settled in at the Holden Ranch to close out the show's run.