Leon used to be a reliable signer through the mail a few years back. He's cut back considerably and his most recent return is 8/2018... he has been the coach of the Louisville Bats, which is your neighborhood.
Also, Under the Radar Sports Promotions in association with Past Pros is having a mail-in signing with him on 9/25. Here is the info:
Flats up to 11 x 14, Bobbleheads, and Balls $20
16 x 20, and Jerseys $25
Under the Radar Sports Promotions
1636 N. Cedar Crest Blvd #323
Allentown, PA 18104