The Cubs' road uniforms had centered numbers in 1972. Here's why - Bleed Cubbie Blue
Here's the worst jersey in Cubs history - Bleed Cubbie Blue
Colors, caps and logos: 113 years of Cubs uniforms
The Ultimate Solution To The Cubs' Drought - Bleed Cubbie Blue
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The Ultimate Solution To The Cubs' Drought - Bleed Cubbie Blue
Colors, caps and logos: 113 years of Cubs uniforms
Revealed: The Story Behind the Cubs’ 1972 Road Uni
An Overview Of Cubs Road Uniforms 1958-2015 - Bleed Cubbie Blue
Cubs All-Time Uniform Number List
Larry Biittner – Society for American Baseball Research
One-game Cubs, 1970-2009 - Bleed Cubbie Blue
Baseball history unpacked, March 16 - Bleed Cubbie Blue
Revealed: The Story Behind the Cubs’ 1972 Road Uni
Heritage Uniforms and Jerseys and Stadiums - NFL, MLB, NHL, NBA
Here's the worst jersey in Cubs history - Bleed Cubbie Blue
Colors, caps and logos: 113 years of Cubs uniforms