JSSUS.org- A great resource, in particular, the Kanji Pages.
Morikami.org- A must see museum if you are in South Florida.
NBTHK-AB.org- The Nihon Bijutsu Token Hozon Kyokai (NBTHK) is the Society for the Preservation of Japanese Art Swords.
Nihontomessageboard.com- A great resource and forum.
Orlando Japanese Sword Show- A must see Sword Show run by Bob Elder.
Southeastshowsauctions.com- Home of the annual Tampa Sword Show.
Dealers and Services
Legacyswords.com- Ted Tenold is a gifted sword polisher by any standard. Also, an honest appraiser.
Nihonto.ca- Darcy Brockbank has excellent items. His site demonstrates a plethora of knowledge.
Nihonto.us- Andy Quirt is an excellent person to conduct business with.
Swordsofjapan.com- Ray Singer has fine swords and great information for the beginner to advanced collector.
Togishi.com- Bob Benson brings Bushido to sword collecting and offers full restoration services. He is extremely knowledgeable and offers sincere advice.
Yakiba.com- Ed Marshall is another recommended person to conduct business with.