38. On the "Ikonomatic" Method of Phonetic Writing. In _Proceedings_ of the American Philosophical Society, 1886.
39. A Primer of Mayan Hieroglyphics. pp. 152. Boston, 1895.
40. What the Mayan Inscriptions tell about. In _American Archæologist_, 1894.
41. On the "Stone of the Giants" near Orizaba, Mexico. In _Proceedings_ of the Numismatic and Antiquarian Society of Philadelphia, 1889.
42. On the Nahuatl version of Sahagun's Historia de la Nueva España, at Madrid. In the _Compte Rendu_ of the Congrés International des Americanistes, 7^eme Session.
43. On the words "Anahuac" and "Nahuatl." In _American Antiquarian_, November, 1893.
44. On the so-called Alagüilac Language of Guatemala. In _Proceedings_ of the American Philosophical Society, November, 1887.
45. The Güegüence; a Comedy Ballet in the Nahuatl-Spanish Dialect of Nicaragua. pp 94. Philadelphia, 1883.
46. Ancient Nahuatl Poetry; Containing the Nahuatl Text of Twenty-seven Ancient Mexican Poems; With Translation, Introduction, Notes and Vocabulary. pp. 177. 1887.
47. Rig Veda Americanus. Sacred Songs of the Ancient Mexicans, with a Gloss in Nahuatl. With Paraphrase, Notes and Vocabulary. pp. 95. Illustrated. Philadelphia, 1890.
48. A notice of some Manuscripts of Central American Languages. In the _American Journal of Science and Arts_ (New Haven), March, 1869.
49. The Maya Chronicles. pp. 279. Philadelphia, 1882.
50. The Books of Chilan Balam, the Prophetic and Historic Records of the Mayas of Yucatan. In the _Penn Monthly_, March, 1882.
51. The Names of the Gods in the Kiche Myths. pp. 38. In _Proceedings_ of the American Philosophical Society, 1881.
52. On the Chane-abal (Four-Language) Tribe and Dialect of Chiapas. In the _American Anthropologist_, January, 1888.
53. A Grammar of the Cakchiquel Language of Guatemala. Translated from an Ancient Spanish MS., with an Introduction and numerous Additions. pp. 67. In _Proceedings_ of the American Philosophical Society, 1884.
54. The Annals of the Cakchiquels. The Original text, with a Translation, Notes and Introduction. pp. 234. Illustrated. Philadelphia, 1885.
55. On some Affinities of the Otomi and Tinné Stocks. International Congress of Americanists, 1894.
56. Observations on the Chinantec Language of Mexico and the Mazatec Language and its Affinities. In _Proceedings_ of the American Philosophical Society, 1892.