Interesting that Golden State Club Supply was at 1040 So. Olive St. in Los Angeles, and T.R.King was at 1035 So. Olive St.

Across the street from each other. (TRKing may have moved to Pico St. at a later date?)

Anyway, I don't know if there was any connection between the two companies, but interesting.

TRKing business card from MOGH/ChipGuide: