Hey Dot
I've actually got this complete series, all 12 tapes worth. They are by Brint Berry, of the EKKS, Eastern Kenpo Karate Society??
They are basically just home video footage transferred to VHS, and not great production qualities. The material isn't too bad, but he's no Larry Tatum. He also does some of the techniques and forms differently than I have learned them, but that seems a pretty common thing in American Kenpo, different instructors having a different "spin" on things.
I bid on a set of these on ebay, but kept getting outbid. I eventually just emailed Brint Berry directly, and he sold me a set directly. I paid significantly more than $100 US, but he threw in a 1990 Nunchaku seminar that Mr Parker taught, as well as a 1982 seminar, footage of Mr Parker and Joe Palanzo doing Form 7, and the vintage footage of Mr. Parker and Chuck Sullivan from 1959 doing the original techniques, as well as a written manual that details the techniques he teaches in his system. Since Mr. Parker is no longer with us, a chance to see him in action, and listen to his seminars made the whole package well worth the money.
take care
Brent