Being an out of work designer I've got some time on my hands so I've recreated a few of the more popular quad label designs and the logos from scratch. I've included links to each cover and logo from my google drive. The cover designs are in Photoshop (.psd) format and the logos in Illustrator (.ai).
A&M Quadraphonic label with gold SQ sticker
ABC Command Quadraphonic with and without colored border
Quadradisc with and without colored border plus the alternate logo
SQ Columbia gold cover in both thick and thin border
Quadradisc logo #1 (Used on covers with border)
Quadradisc logo #2 (Used on covers without border)
ABC Command Quadraphonic logo