Lothar Witteborg's _Good Show! A Practical Guide for Temporary Exhibitions_, originally developed to help people install SITES (Smithsonian Institution Traveling Exhibition Service) exhibits, states a flat rule of "an average 5" 3" eye level" (page 7) but then goes on to show many drawings illustrating many other possibilities, and identifying a variety of factors to think about, when planning installation. Wonderful illustrations of many European exhibits, with thoughtful commentary on all sorts of installation issues, are to be found in Margaret Hall's great book, _On Design_. John N. Pearce Director, Center for Historic Preservation (and James Monroe Museum and Memorial Library) Mary Washington College 1301 College Avenue Fredericksburg, VA 22401-5358 USA voice/voicemail: 703 654-1311 fax: 703 654-1068 e-mail: [log in to unmask]