Chapter 1 Introduction; Chapter 2 Prehistoric Accounting and the Problem of Representation, Richard Mattessich; Chapter 3 Counting, Accounting, and the Input-Output Principle, Richard Mattessich; Chapter 4, Richard Mattessich; Chapter 5 Recent Insights into Mesopotamian Accounting of the 3rd Millennium B.C - Successor to Token Accounting, Richard Mattessich; Follow-Up to ";Recent Insights into Mesopotamian Accounting of the 3rd Millennium B.C.", Richard Mattessich; Chapter 6 Review and Extension of Bhattacharyya's, Richard Mattessich; Chapter 7 From Accounting to Negative Numbers, Richard Mattessich;