Perry Hall Mansion, constructed c. 1775 as the country estate of Harry Dorsey and Prudence Carnan Gough, has long been considered one of the most historic structures in Baltimore County, Maryland. Nestled on a ridge overlooking the lush forest of the Gunpowder River Valley, the mansion has played host to a number of crucial events in both local history and the emergence of Methodism in the United States. Since its completion, the house has claimed 14 different principal owners, culminating with its transfer to public ownership in 2001. Each of the families who lived there left behind unique legacies. Materials contained in Perry Hall Mansion depict the evolving use of the building and grounds and demonstrate how this progression reflected changing conditions within Maryland generally.