1 Investment Income and Profit Margins in Property-Liability Theory and Empirical Results.- 2 The Massachusetts Model of Profit Regulation in Nonlife An Appraisal and Extensions.- 3 A Discounted Cash Flow Approach to Property-Liability Insurance Rate Regulation.- 4 Insurance in an Equilibrium Asset-Pricing Model.- 5 The Determination of Fair Profits for the Property-Liability Insurance Firm.- 6 The Use of Investment Income in Massachusetts Private Passenger Automobile and Workers' Compensation Ratemaking.