My favorite links for reference or purchasing new items
www.ebayonet.com - Dennis Ottobre's (OTTO) web site, a great place to get those less commonly available blades i.e. Turkish.
http://www.bayonets.com/ - site has many highly collectable blades for sale
http://www.bayonetsonline.com/ - Bayonet Trader, another great source of blades and information
http://www.michaeldlong.net/ - For a wide range of militaria
perso.wanadoo.fr/christian.mery/ - French bayonet reference site in English as well
www.arbeia.demon.co.uk/collectors/e_weapons/bayonets/file010a.htm - The British P1888
www.swissrifles.com/bayonets/ - Swiss Bayonet reference site
www.firedept.net/groberts/bay/usbayid.html - Identifying US bayonets
http://www.bayo-hunter.com/links.htm - BayoHunters collection of bayonets
http://www.sigges-bajonette.de - Link to Sigges bayonet collection
http://www.usmilitaryknives.com - Frank Trazka's fantastic site on American Bayonets and Bayonets for American Rifles
http://www.bayonetfrogs.com - Harry Savage if you need a frog made, here is the man for the job
www.muetstege.com - Good new site on Dutch bayonets
www.bayonetsplus.com good site for information and purchases
http://www.karkeeweb.com/patterns/ frogs can be found by following navigation through equipment carriers for each year