Bonanza as "Bonanza". In the fall of 1972, off-network episodes were released in broadcast syndication to local stations by NBC under the "Ponderosa" name. After the series was canceled, the syndicated reruns reverted to the "Bonanza" name. From the fourth season on, the Cartwrights and nearly every other recurring character on the show wore the same clothing in almost every episode. The reason for this is twofold: it made duplication of wardrobe easier for stunt doubles (Hal Burton, Bob Miles, Bill Clark, Lyle Heisler, Ray Mazy) and it cut the cost of refilming action shots (such as riding clips in-between scenes),
Bonanza more season, whereupon Williams found himself pushed out of the part; it was rumored that Landon and Greene felt threatened by the studio initiating a precedent of successfully replacing one heroic leading man Cartwright with a new one, particularly in view of Williams' popularity with viewers. Williams had previously portrayed the titular character in Walt Disney's "Zorro" television series, and went on to play the lead in "Lost in Space", a science fiction television series, after the role in "Bonanza" ended. After graduating from the University of Cincinnati, David Canary was offered a left-end position with the Denver Broncos, but