The C. Darwin Stolzenbach papers consists of correspondence and memoranda, bound and unbound reports, original and photocopied news clippings, documents related to civil action suits pertaining to highway legislation, excerpts from law review magazines, press releases, copies of speeches, minutes and agendas of meetings, original and photocopied Congressional and other legislation, photographs, and maps.

The WMATA Metrorail Specifications collection is comprised primarly of technical specifications and contracts related to the construction of Metrorail. The collection consists of unbound letter-size documents, bound letter-size reports and specifications, oversize reports and specifications, and blueprints.