The Charles C. Plitt Collection consists of a series of journals resulting from weekly botany field trips, which Plitt referred to as "tramps," ranging in date from about 1898 to 1922. Plitt led these tramps through many areas around Baltimore, such as Loch Raven, Glen Burnie, Towson, Curtis Bay, and Ellicott City. The collection also includes biographical data, correspondence, photographs, and a book.