JAMES H. KESSLER is a science teacher. He is the author/editor of Wonder Science, a monthly publication of the American Chemical Society describing hands-on science projects in physics, chemistry and biology for elementary school students. He recently completed two video presentations on the contributions of Africans and African Americans to world science, which have been well received by parents and teacher groups throughout the U.S. J.S. KIDD is Professor Emeritus, College of Library and Information Services, University of Maryland, College Park. He is a specialist in science communication and has worked as a chemist and systems analyst in government and private industry. Kidd currently works part-time for the National Academy of Sciences in Washington, D.C. RENEE A. KIDD is a historian and reading specialist. She has more than 35 years experience teaching reading at the elementary and middle school levels. She received bachelors degrees in science and in reading from Illinois Wesleyan, Bloomington, Illinois, a master's degree in reading from Loyola University, Baltimore, MD, and a master's degree in history from the University of Maryland. KATHERINE A. MORIN is a high school history teacher at the Sidwell Friends School in Washington, D.C. She worked for several years on the editorial staff of the Samuel Gompers Papers Project at the University of Maryland where she received her master's in history.