National Union Catalog of All Books, Manuscripts, Magazines, Pamphlets, Etc., acquired by the Library of Congress from 1942 to 1972, including items back to Medieval origin. Huge 367-volume set complete. All are quality hardcover cloth books printed on 300-year paper. All 8½”x11½”. Ex-library with neat spine & small title page stamps; but, virtually un-used condition throughout! Contains a huge quantity of information for fast identification. The average book weighs 4 lbs., so the set weighs about ¾ ton. Includes all items acquired by the L of C, not just American origin. The overall set is comprised of 7 sub-sets, each in a different color buckram binding; but, all with close appearance to conform otherwise. Would fill 53 feet of shelf.