The first section of the book contains seven original essays, arranged in order to coincide with Bill's (chronological) professional career. These essays cover a wide variety of real estate topics, including valuation theory, definition of market value, market analysis, the appraisal process, role of the appraiser as an expert witness, valuation under environmental contamination, and international real estate issues. The second section of the book reprints eleven of Bill's most influential papers, selected with the help of forty of his colleagues. These articles, written by Bill and various co-authors, represent only a portion of his contributions to real estate theory and practice. They are "classics" in real estate education. The final section contains personal reflections by colleagues, family and friends of Bill. One of Bill's most influential publications is his classic text, "Income Property Valuation", and is frequently cited in the testimonials. These testimonials provide clear evidence that Bill was an excellent teacher and real estate professional. He truly cared about his students and colleagues and worked hard to move the real estate profession forward.