Figure 17.  Stereo photograph of the north façade of the Chenes Temple of the Adivino Pyramid showing
he ladder from which Augustus Le Plongeon photographed iconographic details on the upper part of the temple
above the doorway.  Alice Le Plongeon is  in the center of the photo.  Photograph by the Le Plongeons, ca 1875.
 Biblioteca Cepeda Peraza collection.