Ed Peters received his B.S. from Rensselaer Polytechnic Institute in 1943 in Chemical Engineering and his M.S. from Northwestern University in 1947. He had a long and varied career. He worked as an engineer for the United States Navy and was employed as a chemistry teacher for various high schools and colleges in California. He retired in 1987. Mark S. Cracolice is a professor in the Department of Chemistry and Biochemistry at the University of Montana, where he teaches freshman-level chemistry courses, as well as graduate-level courses in teaching chemistry, theories of learning, and chemical education research. He directs a research group that seeks answers to questions about how students learn and is involved in conducting professional development workshops for high school, college, and university chemistry instructors.