Here are a few with the web addresses, in no particular order:
http://www.classicalpontiac.com/
http://sohcsix.yuku.com/bsohcsix
http://thefirstgensite.com
http://www.angelfire.com/on/geebjen/pontiac.html (Great Tech Links)
http://www.classicfirebird.com/
http://www.transamcountry.com/home/
http://www.teufert.net/
http://ronspontiacpage.com/site-pages/sitemap.htm
http://www.pontiacserver.com/pontiacs.html
http://www.firebirdgallery.com/
http://ultimategto.com/
http://www.firebirdman.com/
http://www.apcom.com/fbody/firstgen/1968firebird.org/index.html
http://www.cliffshighperformance.com/
http://www.frankspontiacparts.com/index.htm
http://home.comcast.net/~gtopercy/index.html
http://members.tripod.com/futom/id113.htm
http://www.geocities.com/MotorCity/Speedway/3342/

Many of the other links I have are general Pontiac info, parts sites, tech info, and a surprising number of sites have either broken links or are just plain gone. This is one way to clear out some dead links!

But this is a small sampling of general Pontiac & Firebird links I'm sure we all have bookmarked... once or twice depending on the category!