50 Journal: A Baseball Jersey Number #50 Fifty

Baseball Player Jersey No 50 Back Number #50 Ball Sport Sticker

The Top Current MLB Player Wearing Each Number from 1 to 50

Sold at Auction: 1964 Topps #50 Mickey Mantle autographed card

At Auction: 1968 Topps #50 Willie Mays autographed card.

2013 baseball recordbook by illiniathletics - Issuu

Derek Jeter's No. 2, Last of Yankees' Single Digits, to Be Retired

Unlike typical team histories that proceed chronologically, Mets by the Numbers is the first and only book that examines the team and its players by ascending uniform number, or from 1 (Mookie Wilson) to 99 (Turk Wendell). This newly revised edition is a catalog of the more than 1,000 Mets who have played since 1962, but it is far from just a list of No. 18s and 41s.

Mets by the Numbers: A Complete Team History of the Amazin' Mets by Uniform Number [Book]

Topps – Page 4 – SABR's Baseball Cards Research Committee

Mick Kelleher Jersey - NY Yankees 2014 Spring Training Opening Day

Astros Price List - Supercollector Catalog

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American Band Journal