I think Edward's interview is an interesting one and his memory was good, which is why I want to make a video, despite the poor quality of the recording.
Edward was born in 1944 and left school in 1962 - those two bits are said at the very start, but fast and unclearly. I may just delete them and type the dates on a graphic.
Edward doesn't mention any other dates (1966) in that segment. Obviously it's easy to get confused with dates, but he says the group had records out before he graduated in '62 - these would be his Jam 45 for Johnnie Mae Matthews (the group's first recording) and on Carrrie for James Hendrix.
I have c. 1960 for The Shack (Jam 3738) and 1961-62 for My One Possession b/w Somebody Tell Me (Carrie 1516)
As you say, he mentions Don Davis and the Fabulous Playboys, who had a Daco release in 1961, so to me it all fits in.
If anyone is a dab hand with Adobe Audition and is willing to have a go at improving the audio, please get in touch.