Hey Ted, when I was a kid my first set was the 1965 Topps. My favorite card was Yastrzemski. He was posed as if he was about to catch a fly ball. As an eight year old I didn't realize that it was just a pose. I really thought that the photographer caught him in the act of making a catch.
I noticed that in the T206 set, Mitchell is in a very similar pose, so that is one of my favorites:
scan0048.jpg
The Merkle throwing is another favorite, particularly this Brown Lenox, which seems to be a 1 of 1:
scan0029.jpg
scan0030.jpg
The Cobb bat off shoulder is one of the prettiest cards in the set IMO, and of course its a Cobb:
scan0001.jpg
And I'll finish my post with a Plank to keep yours company:
scan0038.jpg