about a struggling war widow, her young son, and her father-in-law set on a weather-beaten, modern-day American farm. Two pilots were filmed in Calgary, Alberta, Canada with the first ("Inheritance") telling the story of the bond forged between boy and dog, and the second ("The Well") filmed to give potential sponsors and network buyers an idea of a typical episode. After viewing the pilots, CBS put the show on its fall 1954 schedule. Campbell's Soup Company signed on early as the show's sole sponsor and remained so for the show's entire 19 season run. Filming for the series began in the summer of 1954, and Lassie made its début Sunday, September 12, 1954, at 7:00 p.m. EST, a time slot the show would call home on CBS for the next seventeen years. In 1957, Jack Wrather, owner of the hit television series The Lone Ranger and Sergeant Preston of the Yukon purchased all rights to the Lassie television show for $3.25 million, and guided the show through its next several seasons. As 1964 and the show's eleventh season approached, the decision was made to completely rework the show; the boy and his dog theme was dropped and Lassie was teamed with a succession of United States Forest Service workers. The show focused on conservation and environmentalism, but its relevance in a time of social change was questioned. The show began a steady decline in ratings. In 1971, new rulings regarding network prime time scheduling were handed down from the Federal Communications Commission, and CBS canceled the show. Lassie then entered first-run syndication for two seasons before televising its last new episode on Sunday March 25, 1973. Casting The show's title character was portrayed in the two pilots by Pal, the MGM Lassie. Thereafter, five of Pal's male descendants played the role. His son Lassie Junior performed through the Jeff years and first two Timmy years before retiring in 1959 to battle cancer. Though he recovered, Lassie Junior never worked the show again. His son Spook was rushed into the series while his brother Baby was in training for the role. Spook was inadequately prepared and never became comfortable on the set after an overhead light crashed to the floor on his first day. Weatherwax, however, coaxed a natural and seemingly confident performance from the nervous dog, and some regard Spook's portrayal as Weatherwax's finest work. Spook played the role in