Another recommendation - Keisler's Elementary Calculus: An Infinitesimal Approach http://www.math.wisc.edu/~keisler/calc.html http://www.math.wisc.edu/~keisler

Another recommendation - Keisler's Elementary Calculus: An Infinitesimal Approach http://www.math.wisc.edu/~keisler/calc.html http://www.math.wisc.edu/~keisler/calc.html (pulled from this old slashdot thread) http://books.slashdot.org/story/04/03/04/028253/Five-Free-Calculus-Textbooks http://books.slashdot.org/story/04/03/04/028253/Five-Free-Ca...