Friends of the Thomas Leiper House steward the estate, maintaining the historic mansion and its outbuildings while offering guided tours and curating a collection of materials related to the Leiper family. Located at 521 Avondale Road in Wallingford, the Leiper House stands as a testament to community-driven preservation and local history.

Please support the work of Friends of the Thomas Leiper House by making a donation through Delco Gives–Delaware County’s biggest celebration of generosity. The county-wide giving movement brings people together to support the nonprofits that strengthen our community. Hosted by The Foundation for Delaware County, the third annual Delco Gives takes place May 6–7, 2026.

In just two years, Delco Gives has helped raise nearly $4 million for hundreds of local organizations, increasing visibility, connecting nonprofits with new audiences, and spotlighting the vital work happening across Delco every day.