Another Precalculus text you may be interested in is _Contemporary Precalculus through Applications_ by the North Carolina School of Science and Mathematics (Janson Publications, 1-800-322-MATH). A number of colleges have used it as the precalculus introduction to the Harvard calculus. (A companion Calculus to CPTA is now available, too.) If you call us (Janson) the marketing department could give you more information about where it's been used.
Eric E. Karnowski Mathematics Editor Janson Publications, Inc.