August Le Plongeon leaning against the central monolith ("la Picota"), which he "discovered".
Photograph by Alice Dixon Le Plongeon ca. 1876. Scanned from a high quality 35mm slide provided by the Getty Research Institute, taken from an original photograph in their collection. The image area of the photographs is ca. 3 1/2 x 3 7/8 inches. Reproduced with permission. Research Library, The Getty Research Institute, Los Angeles (2004.m.18-b12.89).