The following books about type might interest you:
Brady, Philip. "Using Type Right: One Hundred Twenty-One No-Nonsense Rules for Working with Type." NTC/Contemporary Publishing Company, 1994.
Bringhurst, Robert. "The Elements of Typographic Style, " second edition. Vancouver: Hartley & Marks Publishers, 1996.
Brown, Alex. "In Print: Text and Type in the Age of Desktop Publishing." New York: Watson-Guptill, 1989.
Catich, Edward M. "The Origin of the Serif: Brush Writing & Roman Letters," second edition. Davenport, Iowa: Catich Gallery, St. Ambrose University, 1991.
Collier, David. "Collier's Rules for Desktop Design and Typography." Reading: Riverside Printing Co. Ltd, 1992.
Jean, George. "Writing: The Story of Alphabets and Scripts." New York: Harry N. Abrams, Inc., 1992.
McLean, Ruari. "The Thames and Hudson Manual of Typography." London: Thames and Hudson, 1988.
Parker, Roger C. "Looking Good in Print," fifth edition. The Coriolis Group, 2000.
R??gener, Stefan, Albert-Jan Pool, and Ursula Packhäuser. "Branding with Type: How Type Sells." San Jose: Adobe Press, 1995.
Spiekermann, Erik, and E.M. Ginger. "Stop Stealing Sheep & Find Out How Type Works," second edition. San Jose: Adobe Press, 2000.
White, Jan V. "Graphic Design for the Electronic Age." New York: Watson-Guptill, 1988.
Will-Harris, Daniel. "TypeStyle: How to Choose and Use Type on a Personal Computer." Berkeley: Peachpit Press, Inc., 1990.