Babe Ruth's last signed baseball to sell at Grey Flannel Auctions
Johnny Sylvester Collection – I'll Knock a Homer For You Fame – to be Sold By Grey Flannel - Sports Collectors Digest
Sell Babe Ruth memorabilia, baseballs, autographs: RR Auction
Babe Ruth-autographed baseball sold for $250,641 at auction - ESPN
MORE
Babe Ruth Yankees jersey sells for $5.64 million – a record price – Hartford Courant
1: Babe Ruth's “Called Shot” Jersey from the 1932 World Series – Robb Report
Signed 1926 Baseball Babe Ruth Sent to Ailing Child with Promise to 'Knock a Homer' Heads February 6 Auction of Little Johnny Sylvester Family Archive
The “Little” Johnny Sylvester Collection – Grey Flannel Auctions Blog
1938 Babe Ruth Game-Worn Brooklyn Dodgers Road Uniform – Jersey and Pants – MEARS A10 on Goldin Auctions
Babe Ruth & Bob Meusel Signed Baseball Inscribed 1924 10-20 (BAS 9)
Yankees – Gotham Baseball