Posted By:
Marc S.George Bush Sr.
I'm not sure if he was a baseball card collector, per se, but Topps released a very special limited edition of a card of him depicted from his Yale playing days in 1990. I believe approximately 100 examples were produced, primarily for Bush and the White House. They are extremely rare to find these days -- and go for about $700+, depending on condition. So perhaps not a baseball card collector, but he might still have his own baseball card in his collection/archives.
~marc