The selection comprising "The Postage Stamps of Anglo-Egyptian Sudan" by Armstrong (1912); "A Short History of the Falkland Islands and its Stamps" by Sloan and Goodman (1927); "The Airmails of British Africa 1925-32" by Baldwin (1932); "The Australian Commonwealth Specialists' Catalogue" (1953); "The Encylclopaedia of British Empire Postage Stamps" by Robson Lowe, volumes 1, 2 and 3, good to fine