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 8, 2025 History Conversations | Land Record Research at the Maryland State Archives
with Morgan Miller | Tuesday, July 8 at 2:00 p.m. | Virtual Event | In this presentation, Morgan Miller from the Maryland State Archives will take you through researching Maryland’s land […]
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 […]