In 1974, as we approached the National Bicentennial and the Centenary of the American Chemical Society, Professor Otto Vogl, then Chairman of the Division of Polymer Chemistry, arranged a very special symposium dedicated to a review of the history of the Divi­ sion. It was an extraordinary occasion which included remarks by Professors Herman Mark, Charles Marvel, William Bailey, and Charles Overberger, all past Chairmen of the Division. The Executive Committee of the Division of Polymer Chemistry felt that 1976 deserved even more attention since it was to be also the 25th, the Silver Anniversary, of the Division of Polymer Chemis­ try. This year would be a most appropriate one not only to review milestones in our discipline, but also to look to the future. It was decided to undertake this volume and Dr. R. D. Ulrich agreed to serve as editor in assembling the collected papers. It is the hope of the officers of the Division that this volume will serve many purposes - a reference text, a record, and a source of perspective. F. E. Bailey Chairman (1976) Division of Polymer Chemistry American Chemical Society vii Contents R. D. Ulrich - The History of the ACS Division 1 of Polymer Chemistry, Inc. Bovey F. A. 31 F. R. Eirich 53 J. D. Ferry 63 P. J. Flory 69 Huggins M. L. 99 L. Mandelkern 113 123 H. F. Mark • C. S. Marvel 133 B. Maxwell 143 .