Re: Writing to Ballplayers
I did this as well when I was younger and found it to be very successful. There's a book out of player's home addresses that I always used for retired players and then I sent current players in care of the team's park.
The former players, especially "no names" are usually thrilled to get fan mail. I got a bunch of 1950's-1960's cards from my uncle so I sent every one of them out to players that were still living. This was around the time of the Pete Rose incident in Atlanta so I usually threw something in about what they thought since many of them played with Pete. I remember Claude Osteen sent a note back that said he was "tired of our great comissioner not letting Pete into the Hall." I also accidently sent one to a player who had passed very recently and his widow sent me a note back explaining it along with his obituary and a card from his funeral service.
Among the players I got in the mail were Jeff Bagwell, Mike Piazza, and Mark Grace. I would definately not recommend sending anything you would miss if it got lost. I did not hear back from several players and Jim O'Toole even sent me a note back that said "$2/card."
Probably the nicest one I got back was from Joe Nuxhall. I sent it out to him on a Monday and received it back Friday of the same week! He not only autographed the two cards I sent him, he included 2 more cards autographed along with a post card of himself from his playing days autographed as well.