The Hidden Collections Initiative for Pennsylvania Small Archival Repositories (HCI-PSAR) is a project of the Historical Society of Pennsylvania, funded by grants from the Andrew W. Mellon Foundation. The goal of the project is to make better known and more accessible the largely hidden archival collections of the many small, primarily volunteer-run historical organizations in the five-county Philadelphia area, such as local historical societies, historic sites, and small museums with archival collections. For more information, visit the HCI-PSAR home page.

Surveying began in September 2011. As of April 30, 2014, project staff had surveyed 990 collections comprising 12,000 linear feet of materials at 113 repositories in the five-county Philadelphia area.

Surveying was completed at 30 repositories in Philadelphia, 31 in Montgomery County, 23 in Bucks County, 15 in Chester County, and 14 in Delaware County.

The map below shows the 113 small repositories surveyed as of April 30, 2014:

  • Yellow = Historical societies (56)
  • Red = Historic sites (30)
  • Green = Museums (10)
  • Blue = Other (17)


View HCI-PSAR through April 30, 2014 in a larger map