Wow, great collection - thanks for sharing it with us!
Thought you might like seeing these two items from my Don Zimmer collection.
1953 Minneapolis Star Newspaper file photo: Don Zimmer (St. Paul Saints) scores a run against the Minneapolis Millers (catcher is Ray Noble - played in Negro Leagues, PCL and Majors) April 28, 1953.
1954 official American Association team signed ball of the St. Paul Saints, Zim's last stop in the minor leagues. This ball is autographed by Zimmer (bottom signature in lefthand photo), 19 other Saint teammates, and team manager Clay Bryant. 12 of the 20 players who signed this ball would go on to play in the Majors.