The author wishes to thank Churchill Eisenhart for calling to his attention the inexcusable failure to mention, in the historical section, the twenty-decimal-place tables of expected values of order statistics and products of order statistics for samples of size twenty and less from the normal distribution computed by J. Barkley Rosser. A ten-decimal-place version of these tables was published by Teichroew [Annals of Mathematical Statistics (1956), 27, pp. 410–26].