I came upon this posting through a genforum search for Fay, and thought that perhaps I should mention that the Fay's have started an ongoing effort to place many of the old records online. You can find us at www.fayfamily.org.
If you check the genealogy page you'll find several (and hopefully more in the future) online genealogies that include the Brigham family. Perhaps you'll find this helpful.
Also, if you check the Books category, and then the original documents category you'll find other material that may be of interest.
We continue to solicit links and content contributions to this site to make it a "resource center" for researchers in the Fay and associated families, including the Brighams.
We also have a mailing list that includes a large number of individuals descended from John Fay of Marlborough, as well as other lines, and of course Brigham researchers are welcome to join us there.
If you are interested in the mail list, please write me at madgrad77@hotmail and I will enter your subscription.