The series was broadcast between 20/09/1956 and 13/12/1956.
The episode titles are:
Violet Elizabeth Wins
Claude Finds a Companion
William and the Ebony Hairbrush
The Brown Check Sports Coat
Aunt Louie's Birthday Present
William and the Three-Forty
William the Bold
William's Lucky Day
William and the Tramp
Cats and White Elephants
Esmeralda Takes a Hand
The Begging Letter
William Meets a Professor
All episodes are believed to be lost.
I've attached some press clippings from the Daily Mirror from the time.
