Bought very few items this year but here are my two favorites.
Belgium note signed by Mel Ott and others on a USO Tour during the Battle of the Bulge.
Letter from Eddie Collins to Otey Clark mentioning his draft status. Otey was a friend of mine. I was always curious why Otey never served in WWII but never wanted to ask. This letter answered my question.
Obtained both via dumb luck.