Contributor: Whit Schroeder
![On the Border: Political Cohesion and Conflict in the Late Classic Piedras Negras Environs thumbnail.](https://www.penn.museum/collections/videos/assets/YAzLXEaAtV4.jpg)
On the Border: Political Cohesion and Conflict in the Late Classic Piedras Negras Environs
Annual Maya Symposium - Whit Schroeder Voices of the Past: Maya Research Today Scholars, first-tim...
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