Explore County History
Learn more about the County’s history through the many voices of past residents
Make A Research Appointment
Request an appointment to access our Research Library and Special Collections
Search Our Collections
Explore our digital collections and archives
View Online Exhibits
Discover different aspects of the County’s unique history through our online exhibits
Featured Events
July 14, 2025 History Conversations REWIND | Drinking Water in the DC Area: Past, Present, and Future
with Michael Nardolilli | Prerecorded virtual event With Western states running out of water, could it happen here? The Executive Director of the Interstate Commission on the Potomac River Basin, Michael […]
July 22, 2025 History Conversations | Timberlawn: The Birthplace of the Special Olympics
with Serena Bolliger, Cultural Resource Planner at Maryland National Capital Park and Planning Commission | Tuesday, July 22 at 2:00 p.m. | Virtual Event | In 1901, fledgling architect Arthur Heaton […]