An old "Brady Bunch" episode showed the parents using 3 slot pay
> phones in a fancy restaurant. They were beige.
It is possible they were GTE. GTE's clone of AT&T's manufacturing arm Western Electric, was called "Automatic Electric" and GTE pay phones were beige; I never saw any other color. This was in Long Beach, California (and possibly Santa Monica and some other beach cities) circa 1973-1987 (when our family left California).