’George Lucas: Maker of Films’ / ‘George Lucas Documentary 1971’:-
https://www.youtube.com/watch?v=zHDEiJiPulo - at the MonosonicJukeJoint youtube channel. (a 1971 release. 58 mins)
About:-
“In-depth 1971 interview with a 27-year-old George Lucas by film journalist Gene Youngblood on Los Angeles Public Television Station KCET. Lucas had just finished his first feature film ‘THX 1138’.”