In May of 2021, I decided to seek out an address for Joe Aversa. I found an address and sent him my card and a letter.
https://www.baseball-reference.com/register/player.fcgi?id=aversa001jos
https://www.baseball-reference.com/register/player.fcgi?id=aversa001jos
https://www.baseball-reference.com/register/player.fcgi?id=allen-001ste
https://www.baseball-reference.com/register/player.fcgi?id=alger-001kev
https://www.baseball-reference.com/register/player.fcgi?id=vilet-001tho
https://www.baseball-reference.com/register/player.fcgi?id=wiegan001bry
https://www.baseball-reference.com/register/player.fcgi?id=heisle001lau
https://www.baseball-reference.com/register/player.fcgi?id=black-001gre
I ended up writing and mailing out 11 letters that day. All addresses that I looked up myself, not listed on an autograph database, as far as I could tell.
I found what looked to be a legitimate address for Mr. Steffens at a company that he was CEO of, so I wrote him a letter and included my card.https://www.baseball-reference.com/register/player.fcgi?id=steffe001mar
I met him at Carpenter Complex, the Philadelphia Phillies spring training facility in Clearwater, Florida in 2001.
Edwin signed a 1993 Fleer Pro Cards card #3969.
I met him at Carpenter Complex, the Philadelphia Phillies spring training facility in Clearwater, Florida in 2000.
Brian signed a 1993 Fleer Pro Cards card #1335.
I met him at a Minor League Clearwater Phillies game at Jack Russell Memorial Stadium in Clearwater, Florida in 1999.
Blas signed a 1994 Fleer Pro Cards card #3028.
http://www.baseball-reference.com/minors/player.cgi?id=cedeno001bla