In July of 1969 a white 1969 Camaro SS 396 convertible was used as the pace car for a double header weekend of sports car racing held at Watkins Glen International Raceway in Watkins Glen, New York. An endurance race known as the Six Hours for the World Championship of Manufacturers was held on Saturday, July 12, 1969 and the Sports Car Club of America's (SCCA) Canadian-American Challenge Cup race (Can-Am) took place on Sunday, July 13, 1969. The driving pair of Jo Siffert and Brian Redman were victorious in the Six Hour event driving their Porsche 908/02 Spyder while Bruce McLaren won the Can-Am race in his McLaren M8B 2/Chevrolet.
This white 1969 Camaro SS 396 convertible is not the same car that was used in some official capacity at the U.S. Grand Prix held at the track nine months earlier in October of 1968. That particular car was optioned with the Rally Sport equipment. This one is not a Rally Sport. In addition, this 1969 Camaro SS convertible is not the same car that is currently for sale as the "1969 Chevrolet Camaro U.S. Formula One Watkins Glen Grand Prix Pace Car" That car was built in September of 1969, two months after the events depicted in these images. (A thread on this car will be posted in the future.)
These four pictures show the Camaro parked in front of the field of sports cars prior to the pace lap for the Six Hour event held on Saturday, July 12, 1969. You can see it on the right side of each image. They are attributed to Dave Friedman. I found them about a decade ago but unfortunately the web site where they were located no longer exists.
Click on the link to see footage of the start of the Six Hour event. It's not very clear but you can see the 1969 Camaro SS convertible pace car entering the pits at the 12:22 mark in the film:
https://www.youtube.com/watch?v=bJpvsBpG0kQ