Aargh! I hate looking at my old cards and finding marked checklists like this. I didn't mark this one, but I remember getting it from a neighbor kid who stopped collecting when he started high school. I was a couple of years younger and was still collecting, so he sold me a bunch of his cards for $20. I had a paper route that helped support my habit. :)
The Yankees won their first AL East title in 1976. They played the KC Royals in the League Championship Series. I remember being bummed out when Chris Chambliss hit that home run to win it for the Yanks.