Backsaw.net - This is THE forum for enthusiasts of old, mostly British, saws.
Lumberjocks.com saw thread
My Lumberjocks.com home page
Time Tested Tools - A great old hand tools site, with a strong emphasis on planes.
WKFineTools.com - American Saws And Their Makers
British Saws And Saw Makers From c1660 - Simon Barley - The best saw book you'll ever see, by the world's leading authority on British saws
Black Mountain Marking - This is where I have my saws laser etched. They do a great job; give them a try.
Westfall Woodcraft - Site of my friend and outstanding furniture maker.
Bontz Saw Works - Exceptional hand crafted saws and other tools.