Here's some logo links that St Francisco posted at MM a long time ago:
NFL Logos by vikngs4lifee
This website features an excellent compilation of a wide variety of team logos, which were specifically made for use in franchise reporting.
http://www.freewebs.com/nfl-logos/
NFL Animated Flags
This is a complete list of those little animated flags. Includes all of the NFL teams, as well as NFL Europe, and some other sports as well.
http://ideaspot.net/nfl/index.html
The Helmet Project
A huge compilation of football helmets for a wide variety of different leagues. If you've ever seen a semi-pro or pro helmet you liked, and want a picture of it, here's the place to look.
http://www.nationalchamps.net/Helmet_Project/
Chris Creamer's sportslogos.net
This is where I go for most of my logos. He not only has the team logos, but also logos of Pro Bowls, Super Bowls, drafts, etc. They're all pretty large and good quality, all you have to do is resize them through an image program to your liking.
http://www.sportslogos.net/
cdh724's NFL Logos
Our own cdh724 did a great job of creating and compiling a variety of logos, most of which are specifically aimed at being used in franchise reports. He has several different categories, not just team logos, so check it out.
http://s8.photobucket.com/albums/a14...4/NFL Logos/
Logo Server
Here you'll find a compilation of team logos that are different than the normal ones. Big logos, old logos, prototypes, etc.
http://www.logoserver.com/Football.html
Logo Shak
Logo Shak offers a wide variety of unique logos from a multitude of sports.
http://www.logoshak.com/