McClinton, K. Handbook of Popular Antiques (New York: Random House, 1946.) A short review of some thermoplastic cases and a brief historical description of some of the known casemakers.
Rinhart, Floyd & Marion. American Miniature Case Art(New York: A. S. Barnes & Co., 1969.) Excellent historical review of thermoplastic and non-thermoplastic casemakers and the case manufacturing processes. Many cases illustrated but limited to known cases of that time.
Rinhart, Floyd & Marion. The American Daguerreotype(Athens: University of Georgia Press, 1981.) The Rinhart's, in Chapter 11, expand their discussion of case manufacturing history. Includes some cases not illustrated in the 1969 title. Krainik, Clifford & Michele, and Carl Walvoord.
Union Cases, A Collector's Guide to the Art of America's First Plastics. (Grantsburg: Centennial Photo Service, 1988.) Thorough and exhaustive research regarding the origin of many case designs. Reproduces nearly all known case designs (at the time.)
Berg, Paul. Nineteenth Century Photographic Cases and Wall Frames. (Huntington Beach: Huntington Valley Press, 1995.) The most complete illustrated book to-date of thermoplastic and non-thermoplastic cases, wall frames and collar boxes. Many illustrated for the first time.