Researches in the Uloa Valley, Honduras : Caverns of Copan, Honduras : report on explorations by the Museum, 1896-97 / by George Byron Gordon

Prehistoric ruins of Copan, Honduras : a preliminary report of the explorations by the museum, 1891-1895

The Hieroglyphic Stairway : ruins of Copan : report of explorations by the Museum / by George Byron Gordon