Chapter One (Introduction and Overview) - 32 pages (posted 8/20/2002, page 1-17 revised on 9/5/2002, two pages 1-17-1 and 1-17-2 added on 9/12/2002)
Chapter Two (Counting Techniques) - 16 pages (figure on page 11 corrected on 10/03/2002; page 10 slightly revised on 10/01/2002; pages 13 - 16 added 9/30/2002; pages 11 and 12 updated 9/24/2002)
Chapter Three (Induction Principles and Properties of Integers) - 28 pages (posted 10/07/2002; pages 3-24 through 3-28 added 10/22/2002)
Chapter Four (Relations and Functions) - 30 pages (re-posted 11/12/2002 with pages 4-12-1 through 4-12-4 added)