New York Yankees Memorabilia, Autographed & Signed Yankees Collectibles
2010 New York Yankees Team Signed Baseball — The Bullpen Sports Collectibles
Operation Bullpen: Be aware of these authenticators and autograph sellers - Sports Collectors Digest
New York Yankees Memorabilia, Autographed & Signed Yankees Collectibles
Gerrit Cole (45) - 2023 Topps Series 1
New York Yankees Authenticated Signed Sports Memorabilia — Ultimate Autographs
Psa Sports Cards - Israel
Autographed Collectibles Beverly Hills, Sports Memorabilia
John Racanelli – SABR's Baseball Cards Research Committee
2007 NY Yankees Team signed Autographed Jersey Authenticated - Ace Rare Collectibles