Mary Butler
1903 – 1970
Books
- The work of the Eldridge R. Johnson Middle American expeditions of the University Museum, Philadelphia, at Piedras Negras, Peten, Guatemala
- Piedras Negras preliminary papers
- Spanish contact at Chipal
- Archæological problems in Erie County Pennsylvania
- Three archaeological sites in Somerset County, Pennsylvania ..
- Piedras Negras pottery ..
Author data: Open Library