HIS FIRST EDITION OF Electronic Properties of Force Materials Laboratory, where Air Force respon T Materials: A Guide to the Literature initiates a sibility for these contracts has resided. Mr. John W. plan for making available the indexing work of the Atwood is Project Manager at Hughes Aircraft Electronic Properties Information Center. Since the Company. inception of EPIC in June, 1961, a basic objective has Professional members of EPIC are Charles L. M. been to use techniques and procedures that would Blocher, Donald L. Grigsby, Dana H. Johnson, allow maximum distribution and use of EPIC output. Thomas J. Lyndon, John T. Milek, Meta S. Neu Accordingly, data processing and reproduction tech berger, and Emil Schafer. All have ably contributed niques were established to reproduce and distribute to this work. Mr. Johnson and Mrs. Neuberger have easily and economically a few copies of what was been primarily responsible for the indexing effort; then a card index. Mr. Lyndon has supervised the classical library pro As the program advanced, it became apparent that cedures and the clerical effort; Mr. Blocher and Mr. a few copies of the index were not enough. The index Grigsby have controlled the indexing vocabulary, the should be available to all, instead of just a select few. cross-references, and the data processing input; and However, this would have meant so many copies that Mr. Schafer has prepared the very excellent glossary, the cost would have drained funds from the program with the assistance of Mr. Milek.

Twenty-four years ago, Hellmut Fritzsche came to our laboratory to evaluate our work in amorphous materials. He came many times, sometimes bringing his violin to play with our youngest son, to talk, to help, to discover, and to teach. The times with him were always exciting and rewarding. There was a camaraderie in the early years that has continued and a friendship that has deepened among Iris and me and Hellmut, Sybille and their children. The vision that Hellmut Fritzsche shared with me, the many important contributions he made, the science that he helped so firmly to establish, the courage he showed in the time of our adversity, and the potential that he recognized put all of us in the amorphous field, not only his close friends and collaborators, in his debt. He helped make a science out of intuition, and played an important role not only in the experimental field but also in the basic theoretical aspects. It has been an honor to work with Hellmut through the years.