Regarding the Faust poster and the Roy Harper LP, I have added these to the
Quadraphonic Popular Discography
FAUST -
* Faust. Polydor 2310 142 [Germany]
{A promotional poster printed in Germany for the album states "A New 3
Dimensional Quadraphonic Rock Experience". The LP has no indication of
Quad. the status has not been determined}
ROY HARPER -
* The Early Years. CBS 31544 [UK]
{A reissue of the 1967 album "Come Out Fighting Ghengis Smith". Side A
label has “Quad-q hafler system” printed under “Stereo”, side B label
has “hafler-q” printed under “Stereo”. The catalog number is the same
as three other pressings from the time and those pressings do not
contain the Hafler notation. As for being Quad, the status has not
been determined}