References:
P.R. Productions. In Touch No. 21 Dec.-Jan. 1975 pg. 74 (Advertisement)
P.R. Productions. In Touch No. 25 Sep.-Oct. 1976 pg. 78 (Advertisement)
"Green Light" The Informant Oct. 1976 pg. 6 (Notes)
"What's Happening?" The Informant Nov. 1976 pg. 1 (Notes)
"An Introduction to P. R. Productions" The Informant Apr. 1978 pg. 6 (Interview)