Thanks Fizzy, A Ebay listing confirmed the 1st one with pictures and has been added to the Anthology / Sampler discographyMark,
I think I've stumbled upon a couple of olde quad matrix albums , via a discogs sleuthing.
At least I think they may be previously unknown ...that is unless you have them well hidden on the Quad Discography ...as I have searched , but none of these are there ? All are EV-4 btw.
I think all 3 belong on the popular listing , as they seem to be Jazz Oriented.
1971 Florida All State High School Band Orchestra , Chorus-Stage-Band
Silver Crest Records FLSE -1971 3 LP Quad BOX SET EV-4
And the two below have been added to the Popular Discography
Leon Breedon - A Jazz Clinic, Crest College Jazz Series , North Tennessee State University Jazz Lab Band
Crest Records CSB -1003 LP EV-4
P.M.A. Jazz Ensemble , Crest College Jazz Series , Evan Solot Director
Crest Records CSB -1002 LP EV-4