John B. Trevor was active in various local (New York state) and national conservative and patriotic organizations; topical files, 1930s-1970s, contain correspondence, published materials, clippings, and ephemera detailing his interest in, and involvement with, such organizations as the Sons of the American Revolution and the American Coalition of Patriotic Societies.
The papers of John B. Trevor, Jr. consist of correspondence and collected materials relating to his activities with various patriotic organizations, including the American Coalition, the Sons of the American Revolution, and the Pioneer Fund.