Uniform History sites

http://history.giants.com/
(Ultimate Giants site) NEW !

http://www.chicagobears.com/ 
http://iml.jou.ufl.edu/projects/ (history of NFL uniforms)
http://www.stlouisrams.com/
http://www.misterhabs.com/ (a field guide to football helmets)
http://www.weirdwolf.net/ (Football uniforms past and present)
http://www.ssur.org/ (the Society for sports uniforms research)

http://en.wikipedia.org/  (category: NFL uniforms)
http://www.packersuniforms.com/
http://www.mikestanhope.com/ (NFL/AFL helmet history site)
http://www.uniwatchblog.com/ (the obsessive study of athletic aesthetics)
http://www.stltoday.com/ (article about Rams uniform)

http://downanddistance.blogspot.com/ (opinion on redesigns)
http://www.uniformviolation.com/ (chronicle of uniform violations)
http://www.geocities.com/ (dedicated to 75th NFL anniversary throwbacks)
http://www.helmethut.com/nfl.html (awesome collection of helmets from all eras)
http://www.purple-pride.com/ (Vikings, vikings, vikings)

http://www.azcardinals.com/history/index.php (fun, informative history of the Normals... known today as the Cardinals)

Blogs we like

http://jetnation.com Self explanatory

http://mdabase.blogspot.com/

(above) A very funny blog on the life of a Brit/Canadian expat living in my neck of the woods... southern sweden

(below) Here's a great bunch of blogs by Colby Almond that feature funny posts and highly entertaining sports clips

http://www.athlists.com
http://www.ath1337.net
http://www.fanmanual.com
http://www.ballitics.com
http://www.sportsftw.com
http://www.iamsporticus.com

http://www.sportsanon.com
http://www.rtfmsports.com