The Christmas Seal Catalog of U.S. National Christmas Seals, 2014 ed., published by the Christmas Seal & Charity Stamp Society.
This is considered the simplified version in that it includes all the details found in Green's Catalog, Part 1, 1907-2013, except information regarding 1979 to date design experiments, 1987 to date Spring issues, Negative Maker's proofs, die proofs, other true printers proofs and errors were removed.
U.S. Lookalike seals from Canada, Bermuda, Puerto Rico and seals overprinted for local and foreign use were added, 72 pages, comb bound.