 Therefore, CBS assured Sherwood Schwartz that "Gilligan's Island" would definitely be picked up for a fourth year.CBS, however, had signaled its intention to cancel the long-running Western series "Gunsmoke", which had been airing late on Saturday nights during the 1966–1967 television season.Under pressure from CBS network president William S. Paley and his wife Babe, along with many network affiliates and longtime fans of "Gunsmoke", CBS rescheduled the Western to an earlier time slot on Monday evenings at 7