Here are some sites that have team uniform history pages (links)...

• MLB:
  Arizona Diamondbacks
  Atlanta Braves
  Baltimore Orioles
  Chicago White Sox
  Milwaukee Brewers - Logos, Uniforms
  New York Mets
  New York Mets - Fan Site
  Oakland Athletics
  Philadelphia Phillies - Logos, Uniforms
  San Francisco Giants
  Seattle Mariners
  Texas Rangers
  Toronto Blue Jays
   
• NFL:
  Pro Football Hall of Fame - Franchise Nicknames
  Atlanta Falcons
  Buffalo Bills
  Chicago Bears
  Cincinnati Bengals
  Cleveland Browns
  Cleveland Browns - History of the Cleveland Browns Helmet
  Green Bay Packers
  Green Bay Packers - The Packers Uniform Database
  New Orleans Saints
  Pittsburgh Steelers
  St. Louis Rams
  San Diego Chargers - Visual History
   
• NBA:
  Chicago Bulls
  Cleveland Cavaliers
  Cleveland Cavaliers - Fan Site
  Houston Rockets
  Indiana Pacers
  Los Angeles Clippers
  Milwaukee Bucks
  New York Knicks
  Phoenix Suns
  Portland Trail Blazers
  Utah Jazz
  
  Team History Links
  Vintage Logos
   
• NCAA:
  Michigan State U.
  Northwestern U.
  Syracuse U.
  Virginia Polytechnic Institute and State U. (Virginia Tech)

If anyone finds any more of these - for any team, in any league, please send them to info@colorwerx.us.