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.

Phase I surveying began in September 2011. As of the end of Phase II (October 31, 2014), project staff had surveyed over 1,100 collections comprising more than 12,000 linear feet of materials at 130 repositories in the five-county Philadelphia area.

Surveying was completed at 38 repositories in Philadelphia, 32 in Montgomery County, 23 in Bucks County, 17 in Chester County, and 20 in Delaware County.

The map below shows the 130 small repositories surveyed as of October 31, 2014:

  • Yellow = Historical societies (63)
  • Red = Historic sites (30)
  • Green = Museums (15)
  • Blue = Other (22)



View HCI-PSAR Phases I and II in a larger map