I saw this linked on the uniwatch blog, and it’s a link to that great baseball card blog I linked to in one of my first posts. Back in the old days, they used to airbrush new hats and uniforms when a player was traded after they had taken the baseball card photos with the player’s old team. Some real gems in here:
http://baseballcardblog.blogspot.com/2008/03/air-hall-of-challengers.html