...Photo courtesy of Dave Pateman / daveP@koolatron.com

Additional comments regarding the cars in this photo and track event, provided by Glenn Stazak...

Most likely Harry Bytzek / Canada @ one of these races:
Carter Hall GT Series 5/15/1971 GA United States 3-Hour IMSA GT Race 6/27/1971 NY United States
250 Miles IMSA GT Series Race 9/19/1971 WV United States

Brumos #59 was a 911S in 1972 (only other #19 914/6). Most likely Bridgehampton from the look of the track.