Merlin's Magic - 2013 was released on: USA: 1 May 2013 (video premiere)
Yogi's Treasure Hunt - 1985 Merlin's Lost Book of Magic 1-9 was released on: USA: 28 October 1985
The Mouse Factory - 1971 Spooks and Magic 1-4 was released on: USA: 16 February 1972
Merlin - 1998 TV was released on: USA: 19 October 1998
Young Merlin - 1993 VG was released on: USA: 1993
Magic - 2010 was released on: USA: 2010
Mouse in the House - 1967 was released on: USA: 1967
Merlin season 3 is able to be watched on Youtube. Check on Wikipedia to see the release dates. Only a few are out. Enjoy them :D.
Mr. Merlin - 1981 A Moment in Camelot - 1.7 was released on: USA: 18 November 1981
Mr- Merlin - 1981 The Ache 1-10 was released on: USA: 23 December 1981
Magic Umbrella - 1965 was released on: USA: 1965
Carving Magic - 1959 was released on: USA: 1959