The Gore Roll (Online database, with photographs of the arms and excerpts of Harold Bowditch’s commentary, first published in Rhode Island Historical Society Collections in 1936-1938).
Also available here, to download, is Harold Bowditch’s original textual edition, with complete introduction and commentary: Harold Bowditch, “The Gore Roll of Arms,” Rhode Island Historical Collections 29 (1936), 11-30, 51-64, 92-96, 121-28; 30 (1937), 28-32, 54-64, 88-96, 116-28; 31 (1938), 24-32, 56-64, 90-96, 124-28 (PDF, 11.5 MB). This is out of copyright and available freely to non-members of NEHGS (extracted from the RIHC volumes available at archive.org).
Selected Annual Reports of the Committee on Heraldry
Published by the founding members of the Committee on Heraldry as a quarterly journal, in four volumes, 1865-1868.