Nothing historical happened on this date at Yankee Stadium (Aug. 8 1971).
However it was the very first game I saw in person. My father (who wasn't a baseball fan) knowing I was an Orioles fan, took me & my sister to it for my 10th birthday..
My program from the game is long gone, but I had searched eBay for a long time & I finally located a scored copy (now I just need to find a stub to go with it):