Uniform number (American football) - Wikipedia
Best player to wear each jersey number in NFL history: Tom Brady leads list of six active players
College football: Rebels' Orvedahl slides under recruiting radar but could still be a good get - Duluth News Tribune
The NFL's best players by uniform number: 00–49 - Sports Illustrated
Ranking the 100 best players in college football - 2014
The best players by jersey number in Eagles history - The Athletic
The top Big Ten football players by jersey number - Big Ten Network
Rank and file: Top 100 college football players for the 2021 season, Sports
Countdown: Tank, Ratliff Have Both Rocked No. 90
Polzin: Best Wisconsin players to wear jersey Nos. 40-49.
Big 12 Unbeatens, Traditional Powers Set to Clash - University of Nebraska - Official Athletics Website