80 – Long, Richard E.C. Notebooks containing various abstracts, 1885-96
81 – Long, Richard E.C. Researches of Maya astronomy, 1930-3
82 – Long, Richard E.C. Proofs of Maya hieroglyphic writing, by J.E. Thompson, 1950
83 – Long, Richard E.C. Notes and abstracts from papers by various authors, 19-
84 – Long, Richard E.C. The new and the old in Guatemala and the Calendar of Soloma and of other Indian towns, by Robert Burkitt, 1929-30
85 – Long, Richard E.C. Book of Chilam Balam of Tizimen, 1948
86 – Long, Richard E.C. Collection of reprints and photostat copies of papers by Robert H. Merrill, 1941-7
87 – Long, Richard E.C. Collection of reprints by various people, 1924-49
88 – Long, Richard E.C. Further implications of Thompson’s readings of Maya inscriptions at Copan, 1948
89 – Long, Richard E.C. Thomas Wentworth [Earl of Strafford, 1593-1641]: a biography