The infrastructure of the maps is informed by digitally available archival documents from the SNCC Digital Gateway at Duke University, the Civil Rights Movement Veterans at Tougaloo College, and the Freedom Summer Digital Collection at the Wisconsin Historical Society.
Databases available for download:
Database of Friends of SNCC Chapters (by year)
Database of Freedom Summer Volunteers by university/college (incomplete)
Database of Freedom Summer Volunteers by post-summer activism
Database of 1960 U.S. Census Data
Database of Summer Incidents