The Cubs' road uniforms had centered numbers in 1972. Here's why
MLB Jersey & Cap History
The best players to wear every jersey number in baseball history - The Athletic
MLB Jersey & Cap History
MORE
Houston Astros - Wikipedia
The rule of thirds and '08 Stadium Club
Revealed: The Story Behind the Cubs’ 1972 Road Uni
Uni Watch: Cubs uni history - ESPN Page 2
Colors, caps and logos: 113 years of Cubs uniforms
Uni Watch: Cubs uni history - ESPN Page 2
Here's the worst jersey in Cubs history - Bleed Cubbie Blue
Heritage Uniforms and Jerseys and Stadiums - NFL, MLB, NHL, NBA, NCAA, US Colleges: Chicago Cubs Uniform and Team History