It’s The Late Art Clokey’s Birthday (Gumby’s Dad)
Clokey showed Gumbasia to movie producer Sam Engel, whose son Clokey happened to be tutoring at the time. Engel was so impressed that he offered to fund Clokey’s next endeavor, with the suggestion that he add clay figures.
That endeavor? A pilot for what would become one of the most beloved children’s television shows of all time — Gumby.
Via The Daily What