Mercer, H. C. (1896). The hill-caves of Yucatan: A search for evidence of man's antiquity in the caverns of Central America : being an account of the Corinth Expedition of the Department of Archaeology and Palaeontology of the University of Pennsylvania. Philadelphia: J.B. Lippincott.

Mercer, Henry C. The Hill-caves of Yucatan: A Search for Evidence of Man's Antiquity in the Caverns of Central America : Being an Account of the Corinth Expedition of the Department of Archaeology and Palaeontology of the University of Pennsylvania. Philadelphia: J.B. Lippincott, 1896.

Mercer, Henry C. The Hill-caves of Yucatan: A Search for Evidence of Man's Antiquity in the Caverns of Central America : Being an Account of the Corinth Expedition of the Department of Archaeology and Palaeontology of the University of Pennsylvania. Philadelphia: J.B. Lippincott, 1896.