I am also interested as they are my paternal line. The last volume of published Thayer history that I saw was Volume 5 from the Thayer Families Association. One first cousin in Rhode Island has been working on genealogy for years, so I know her information is accurate. I found mistakes in information for my parents in this volume, and I am sure there are other mistakes as well. I don't know who provided the information on my parents, but they were obviously making a stab in the dark. I've taken my research back to the brothers who arrived from Thornbury circa 1637. I've seen some of the information from Thornbury, have been working on the ones who came to Mendon, MA and beyond before going further back.
Since I am still relatively new to this, I'd like to know a bit more what participation in the project entails. I have Wheelock, Holbrook, Dimery and Wheeler, among others, in my line and am directly descended from Thomas Thayer (1596-1665) and Margery Wheeler (1600-1673) who arrived 8 April 1637 aboard the "Blessing".