----------------- HES POSTING ----------------- I need some help finding biographic information about Karl G. Karsten. He is author of a book: Charts and Graphs (1923, New York),and two journal articles: 1924. The Theory of Quadrature in Economics. Journal of the American Statistical Association 19: 14-27. 1926. The Harvard Business Indexes - A New Interpretation. Journal of the American Statistical Association 21: 399-418. I am grateful for any information or reference you can give. Marcel Boumans University of Amsterdam ------------ FOOTER TO HES POSTING ------------ For information, send the message "info HES" to [log in to unmask]