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An official website of the State of Maryland.

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Maryland Historical Trust

Research

The Maryland Historical Trust (MHT) has libraries and online resources that can help researchers understand the history, evolution, and significance of historic places across the state.

GIS map of Annapolis with colored shapes indicating various sites and districts.

Explore Maryland’s History with Medusa

Discover and map Maryland’s historic places using Medusa. This powerful, interactive GIS tool lets you explore an extensive database of architectural and archaeological resources with instant access to records from the Maryland Inventory of Historic Properties and the National Register of Historic Places.

Visit Medusa

1914 Sanborn map of Baltimore City showing blocks along N. Howard Street and Park Avenue, with buildings labeled and color-coded.

Architectural Research at MHT

Explore documentation on Maryland’s built environment.

View reports and studies