Andrew M. Mclean, rare books expert and professor emeritus at the University of Wisconsin-Parkside, has taught classes on the history of printing & book collecting, and owned Martha Merrell’s Bookstore in Racine (WI). He has served as an appraiser and consultant to rare book librarians & archivists, appraising donations given to institutions such as the American Geological Society, Wisconsin State Historical Society, US Air Force Academy, NML Insurance Co., UW-Milwaukee Libraries, the Rock and Roll Hall of Fame, and the Oklahoma City National Memorial Archives. He also appraises at the annual Milwaukee Public TV/ Channel 10 Appraisal Fair. He has published “The Appraiser and the Appraisal: What Makes a Book Valuable?” in Libraries, Museums and Archives. Legal Issues & Ethical Challenges in the New Information Era, ed. T.A. Lipinski (Scarecrow Press, 2002), pp. 31-45.