Chard, Chester S. Distribution and significance of ball courts in the Southwest. Papers of the Excavators' Club, vols. 1 and 2. Cambridge, Mass., Excavators’ Club, 1940

Chard, Chester S. Distribution and significance of ball courts in the Southwest. Papers of the Excavators' Club, vols. 1 and 2. Cambridge, Mass., Excavators’ Club, 1940, Box: 14, Folder: 10. Campbell W. Pennington Papers, 33036864. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/279469 Accessed September 26, 2026.