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1880 Letter to Stephen Salisbury, Jr., December1. American Antiquarian  Society, Worcester.

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1856 Archaeology of the United States. Smithsonian Contributions to Knowledge, Vol. 8.
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1897 Review of Queen Moo and the Egyptian Sphinx. The Arena 17:342-345.

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1923 Pioneers of Mayan Research.  The Outlook 134:474©476.

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1856 Advertisement for Augustus Le Plongeon's photographic studio.  May 21, p. 4, San Francisco.

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1877 Letter to Mrs. Gaylord, April 3.  American Antiquarian Society.
1879 Notes on Yucatan.  Proceedings of the American Antiquarian Society, No. 72, pp. 77-106.
1881a Ruined Uxmal. The New York World, June 27, p. 1-2.
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1881c Yucatan's buried cities. The New York World, November 27, p. 10.
1884a Dr. Le Plongeon's latest and most important discoveries among the ruined cities of Yucatan. Scientific American Supplement 448, August 3, pp. 7143-7174.
1884b Plague of locusts in Yucatan. Scientific American Supplement 449, August 9, p. 7174.
1885 The new and old in Yucatan.  Harper's Magazine 70:372-386.
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1894 Early architecture and engineering in Peru. The Engineering Magazine 7(1):46-60.
1896 Letter to Phoebe A. Hearst, undated. Bancroft Library, Berkeley.
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1902 Queen Moos Talisman.  Peter Eckler Publisher, New York.
1905 Letter of Phoebe A. Hearst, March 4.  Bancroft Library, Berkeley.
1909a Augustus Le Plongeon, M.D., L.L.D. Journal de Societe des Americanistes (Paris), No. 2, pp. 176-279.
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1867 La religion de Jesus comparada con las ensenanzas de la Iglesia.  W. White and Co., Boston.
1869 Los Jesuitas e el Peru.  W. White and Co., Boston.
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1876 Letter to Chas. F. Meudue, December 12. American Antiquarian Society, Worcester.
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1877b Letter to Stephen Salisbury, Jr., September 1. American Antiquarian Society, Worcester.
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1878b Letter of Stephen Salisbury, Jr., May 13. American Antiquarian Society, Worcester.
1879 Archaeological communication on Yucatan. Proceedings of the American Antiquarian Society, No. 72, pp. 65-75.
1880a Letter to Stephen Salisbury, Jr., September 29. American Antiquarian Society, Worcester.
1880b Letter to Stephen Salisbury, Jr., November 2. American Antiquarian Society, Worcester.
1880c An open letter from Professor Le Plongeon, of Belize, British Honduras. The Present Century 2:337-339.
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1881d An interesting discovery. A temple with Masonic Symbols in the ruined city of Uxmal. Harpers Weekly, December 17, pp. 851-852.
1882a Letter to Stephen Salisbury, Jr., June 8. American Antiquarian Society, Worcester.
1882b Letter to George F. Hoar, June 24.  Peabody Museum, Harvard.
1886 Sacred mysteries among the Mayas and Quiches, 11,500 years ago.  Macoy Publishing, New York.
1889 Letter to Stephen Salisbury, Jr., January 7. American Antiquarian Society, Worcester.
1896 Queen Moo and the Egyptian Sphinx.  By the author, New York.
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1907 Letter to Charles Bowditch, May 28.  The Peabody Museum, Harvard.
1913-14 The origin of the Egyptians. The Word Magazine Vols. 17 and 18.

Lespinasse, A. J.
1877 Letter to Augustus Le Plongeon, March 8. American Antiquarian Society, Worcester.

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1857 Observations on Mexican history and archaeology, with a special notice of Zapotec remains.  Smithsonian Contributions to Knowledge, Vol. 9.

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1977 The history of photography in Peru in the nineteenth century: 1839-1876.  Unpublished Ph.D. Dissertation, University of New Mexico, Albuquerque.

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1931 Letter to J. C. Merriam, October 10.  Carnegie Institution, Washington, D.C.

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1887 Sketches of Yucatan.  A review of Here and There in Yucatan, New York Times, May 29, p. 14.
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Ober, Frederick A.
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1855 Advertisement for Augustus Le Plongeon's photographic studio, August 20.

Scientific American
 1895 A woman archaeologist.  Scientific American Supplement 1023, August 10, p. 83.

Seler, Eduard
1915 Amerikanische Altertumskunde. Vol. 5.  Behrend and Company, Berlin.

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1927 The prosaic vs. the romantic school in anthropology.  In, Culture: The Diffusion Controversy, W. W. Norton and Company, New York.

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1848 Ancient Monuments of the Mississippi Valley. Smithsonian Contributions to Knowledge, No. 1, Washington, D.C.

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1843 Incidents of Travel in Yucatan. (2 Volumes) Harper and Brothers, New York.

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1973 The development of American archaeology:1800-1879.  Unpublished Ph.D. dissertation, University of Chicago.

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1880 Letter to Stephen Salisbury, Jr.  American Antiquarian Society, Worcester.

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1931 Maya legend in the making.  Proceedings of the American Antiquarian Society, No. 61, pp. 340-343.

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1882 The Olmecas and the Tultecas: A study in early Mexican ethnology and history.  Proceedings of the American Antiquarian Society, (New Series)  II:193-230.

Viking, John O.
1912 The petrified clam; or Eli, Eli, Lamah Sabachtani.  The American Antiquarian and Oriental Journal, 34 (3):190-192.

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 1962 Lost tribes and sunken continents.  University of Chicago Press.

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 1926 The city of the sacred well.  New York Century Company.

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