A uniquely important 19th century photograph showing the base of the west facade of Temple I and vaulted passageway under the staircase added for Temple IV.
Photograph by Augustus Le Plongeon, ca.1876. This image 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-b12.69).