Scooby Doo, Where Are You! is the first incarnation of the long-running Hanna-Barbera Saturday morning cartoon series Scooby-Doo. Created by Joe Ruby and Ken Spears, it premiered on CBS September 13, 1969, and ran for two seasons for a total of 25 episodes. Its final first-run episode aired on October 31, 1970. Nine episodes from Scooby-Doo's 1978-79 season, first run on ABC, were originally broadcast with the 1969 Scooby Doo, Where Are You! opening and closing sequences. The entire 1978-79 season is sometimes marketed as the third season of the original Where Are You! series. ... more on Wikipedia