We take this opportunity to thank many correspondents whose comments and criticisms led to improvements in the Third Edition. The list below is far from complete since it does not include the names of countless students whose reactions to the book as a text helped the authors in this revised edition. We apologize to those whose names may have been inadvertently omitted from the list because we were not diligent enough to keep a complete record of all the correspondence. For the third edition we wish to thank Professors Yue-Cune Chang, Anirban Das Gupta, A. G. Pathak, Arno Weiershauser, and many other readers who sent their questions and comments. We also wish to acknowledge the assistance of Dr. Pooplasingam Sivakumar in preparation of the manuscript. For the second edition: Barry Arnold, Lennart Bondesson, Harry Cohn, Frank Connonito, Emad El-Neweihi, Ulrich Faigle, Pier Alda Ferrari, Martin Feuerrnan, Xavier Fernando, Z. Govindarajulu, Arjun Gupta, Hassein Hamedani, Thomas Hem, Jin-Sheng Huang, Bill Hudson, Barthel Huff, V. S. Huzurbazar, B. K. Kale, Sam Kotz, Bansi Lal, Sri Gopal Mohanty, M. V. Moorthy, True Nguyen, Tom O'Connor, A. G. Pathak, Edsel Pena, S. Perng, Madan Puri, Prem Puri, J. S. Rao, Bill Raser, Andrew Rukhin, K. Selvavel, Rajinder Singh, R. J. Tomkins; for the first edition, Ralph Baty, Ralph Bradley, Eugene Lukacs, Kae Lea Main, Tom and Carol O'Connor, M. S. Scott Jr., J. Sethuraman, Beatrice Shube, Jeff Spielman, and Robert Tortora.

We thank the publishers of the American Mathematical Monthly, the SIAM Review, and the American Statistician for permission to include many examples and problems that appeared in these journals. Thanks are also due to the following for permission to include tables: Professors E. S. Pearson and L. R. Verdooren (Table ST11), Harvard University Press (Table ST1), Hafner Press (Table ST3), Iowa State University Press (Table ST5), Rand Corporation (Table ST6), the American Statistical Association (Tables ST7 and ST10), the Institute of Mathematical Statistics (Tables ST8 and ST9), Charles Griffin & Co., Ltd. (Tables ST12 and ST13), and John Wiley & Sons (Tables ST1, ST2, ST4, ST10, and ST11).