Whaddya know, Ray Bradbury is now a Famous Author!
Here's an interview from the series Day at Night, which was recorded in 1974. Bradbury refers to Something Wicked This Way Comes (1962) as being published "eight or nine years ago", but he was a couple of years off as the actual airdate of the interview was 21 January 1974). It has many of the familiar interview questions and Bradbury anecdotes, but one or two novelties such as the opening question about fantasy in relation to fantasising.
Incidentally, the whole aechive of Day at Night is online at CUNY-TV, and includes an amazing roster of interviewees.