These records pertain to the International Congress of Systematic and Evolutionary Biology (ICSEB), 1969-1973, and were maintained by Sally W. Yochelson, administrative assistant, Office of the Director, National Museum of Natural History. Her arrangement of the records and description of their contents made possible this descriptive finding aid. Records include Steering Committee minutes and correspondence; program development and plans; keynote speaker correspondence; symposia organizer correspondence; abstracts of contributed papers, and photographs of the steering committee members.
Correspondents include Walter Bock, Charles E. Bracker, Martin A. Buzas, John O. Corliss, Richard Sumner Cowan, Theodore J. Crovello, Gilbert S. Daniels, Walter M. Fitch, Lawrence Gilbert, David W. Goodall, Stephen Jay Gould, Terrell H. Hamilton, Stephen P. Hubbell, David A. Hull, Paul D. Hurd, Jr., International Association for Plant Taxonomy, Richard Levins, Helen Niña Tappan, Askell Löve, Doris Löve, Malcolm C. McKenna, Lynn Margulis, James F. Mello, Robert W. Pennak, James A. Peters, Peter H. Raven, John R. Reeder, James L. Reveal, Robert K. Selander, Frans Antonie Stafleu, Society of Systematic Zoology, B. L. Turner, William A. Weber, David L. Wood, and Ellis L. Yochelson.