This collection contains manuscript materials, photographs, and emphemera related to Cloisters Castle located in Lutherville, Maryland. Also included is a 2008 oral history transcript with Margaret Tilghman.

This collection contains 23 scrapbooks documenting the tours and history of the Maryland House and Garden Pilgrimage, a nonprofit organization which has held annual house and garden tours across Maryland counties since 1930. Also included in the collection are slides and print photographs of houses included in the tours, committee minutes, correspondence, and various administrative subject files, circa 1937-2003.