Detroit: Oldsmobile Div. of General Motors Corp. 1972. Softcover. 31 pp. 8" x 11 1/2" staple-bound horizontal brochure with color illustrations. **OCLC** lists two [2] copies one each at The Hagley Museum and Library, Wilmington, DE and the Library of Michigan, Lansing, MI.
Belknap Press/Harvard University: Cambridge, 1993. Hardcover. 650 pp. With color and black and white illustrations. Constructs a vivid picture of peasant and patrician life in the eleventh to fifteenth centuries.
New York: Facts on File, 1996. Softcover. 294 pp. Black and white illustrations, subject index and name index. A comprehensive resource.