The Committee on Heraldry of the New England Historic Genealogical Society is publishing a new book of the Roll of Arms registered by the Committee between 1928 and 1980, previously published over the years in a series of nine booklets.
It is still possible to find some of these booklets on such websites as eBay (this is how I have managed to acquire Parts 1, 2, 6, 7, 8, and 9), but they are clearly pretty rare and it takes a lot of hunting to acquire a copy.
So it comes as good news that the NEHGS is going to republish these historical American arms in a single volume.
According to the NEHGS website, A Roll of Arms will sell for US$34.95, and will be available in July 2013, although Jeremy Hammond of the blog Maine Heraldry has noted in a posting in the forum of The International Register of Arms that email correspondence from Henry Beckwith of the Committee on Heraldry has said that the volume will not be available until the end of this year.
Still, whether this month or later this year, this volume is going to be a worthwhile addition to the library of anyone with an interest in American Heraldry. You can be sure that as soon as it is available, I will be adding it to mine.
A description of the book and ordering information can be found on the NEHGS website at http://www.americanancestors.org/Product.aspx?id=27963