History of MLB rules changes
Uniform designs broke all the rules during 1970s
A look at weird baseball uniforms
How the Pittsburgh Pirates sparked a uniform revolution in the 1970s - ESPN
Fashion's Role in the Ongoing Black Civil Rights Movement – WWD
Maj. Reisman's Field Uniform in The Dirty Dozen » BAMF Style
Outrage and Rebellion Over 1970s Dress Code
MLB's New Rules Have Baseball in Overdrive - The New York Times
How the Pittsburgh Pirates sparked a uniform revolution in the 1970s - ESPN
Uniform number (Major League Baseball) - Wikipedia
Combat uniform - Wikipedia
Chicago Bears: Take a look back at a century of uniforms
Spirit of '76: The year the Dallas Cowboys wore red, white, and blue