What part of Mass are you in? Warren Stanley-sensei, a Rokudan(6th degree) in Muso Jikiden Eishin Ryu Iaido, is in Boston, Mass. He runs the New England Iaido Kyokai and is a student of Honami Koji-sensei of Kamakura,Japan. Stanley-sensei is affiliated with the Zen Nippon Iaido Renmei. Excellent and very powerful Iai swordsmen.
I don't believe he has an online presence of any kind so you will need to look him up in the phonebook or call information.
Hope this helps.
Charles Mahan
Iaido - Breaking down bad habits,
and building new ones.