Founded in 1936, the Society is the oldest community organization on the Upper Main Line conducting local historical research, and collecting local resources and photographs, pertaining to the townships of Tredyffrin and Easttown in eastern Chester County, Pennsylvania.

Our History Quarterly Digital Archives are available to all for viewing and searching. This valuable local history resource contains most of the issues published since 1937, and provides details and unique perspectives on many aspects of our historic community.

The following sections are curated and hosted by Mike Bertram.
NOTE: These sites are in transition to a new platform and
some functional or appearance issues may still remain.
Please report problems to this email address.

Our extensive and ever-growing Image Collection online database features a searchable partial inventory of our collection of historic images.

The Document Collection features a growing collection of documents of historical interest, including short illustrated articles, newspaper clippings, and much more.

The Tredyffrin History Digital Archives features interactive maps and information about tax & census returns, roads, structures, currency, war reparations, and more.

The Easttown Deed History branch of the site showcases research on the history of land ownership in Easttown Township.

The Charlestown History Digital Archives features interactive maps and information on tax & census returns, genealogy, structures, currency, war reparations, and more.

The Winter 2025 issue of the History Quarterly has been distributed to our membership, and is avaialble for sale to the community at our local public libraries and distributors