On Samuelson's deadweight loss--following John Womack's sighting in the 9th edition: Using the lazy way out of just looking in the index, the term deadweight loss also appears in the index of the 8th edition of Samuelson (1970) but NOT in the index of the 7th edition (1967) NOR in the index of any earlier edition (i.e. 1 through 6). Whether a careful reading of the text in editions prior to the 8th would reveal the term in the text though not in the index I will for others to pursue. The term does appear in the index of the 15th edition of Samuelson and Nordhaus (1995). David Mitch