[William]

"Fiberglass belted WHITE LETTERED tires were not an option for Camaros or Chevelles in 1969.

So many nice, otherwise correct cars have the wrong tires on them. A case, I believe, of relying on other restored cars as a model and not doing the research. It has snowballed.............."

You are the guy that needs to do more research. According to the April 1, 1969 Camaro Options and Accessories option PL4 is described as "(5) F70 x 14/B Fiberglass Belt White Lettered Blackwall"

I have a shipper copy for a COPO showing option PL4, described as "5PL4JD F70 x 14 FG BELTED WH LET TIRES"

It is what you learn after you know it all that counts.