Last fall I sent a 1954 Topps to Whitey Ford to sign. He did, but he signed it in ballpoint. Twice. An odd return that I've wanted to upgrade for a while. Recently I did. I sent him another card and a $20 check and got back a very nicely signed card in blue sharpie, and he even added his jersey number. It looks great.
Coincidentally, I also bought a 1959 Topps signed by Whitey Ford from a fellow member of sportscollectors.net. I also bought one signed by Enos Slaughter. Mr. Slaughter was a very good signer through the mail until he passed away in 2002, about a year before I started collecting.
My younger son added to his Mets collection yesterday. Bill Wakefield signed his 1965 Topps for him.