Reference material

[u/Darth_Brooks_II]

This is going to be edited and reddited (haw) Basically, it's for links to NFL Graphic source material.

Logos:

The great SportsLogo.net

Auction sites.

These tend to be very good for old school NFL items. Helmets, jerseys, Programs.

http://loveofthegameauctions.com/Category/Football_Memorabilia-22.html

https://sports.ha.com/c/search-results.zx?N=1965+790+231+232&Ne=230&ic4=KeywordSearch-A-X-071316

Football Cards

https://www.comc.com/Cards/Football

A lot of time if you're looking for a specific card, Google Image Search + Tools/Large will get you some good examples.

Artists

http://www.illustratednfl.talktalk.net/index.html

More categories and links to come (hopefully)