Calston Industries. Gay Times #25, 1974 pg. 7 (Advertisement)
Calston Industries. Gay Times #24, 1974 pg. 9 (Advertisement)
Calston Industries. Gay Times #35, 1975 pg. 10 (Advertisement)
Calston Industries. Gay Times #34, 1975 pg. 10 (Advertisement)
Calston Industries. Gay Times #33, 1975 pg. 10 (Advertisement)
Calston Industries. Gay Times #32, 1975 pg. 10 (Advertisement)
Calston Industries. Gay Times #31, 1975 pg. 10 (Advertisement)
Calston Industries. Gay Times #29, 1975 pg. 10 (Advertisement)
Calston Industries. Gay Times #28, 1975 pg. 10 (Advertisement)
Calston Industries. Gay Times #27, 1975 pg. 10 (Advertisement)
Calston Industries. Gay Times #36, 1975 pg. 11 (Advertisement)
Calston Industries. Gay Times #30, 1975 pg. 11 (Advertisement)
Calston Industries. Gay Times #26, 1975 pg. 12 (Advertisement)
Roger Martin. "Gay Products Probe" Gay Times #29, 1975 pg. 14 (Review/Pictures)