Washek F. Pfeffer is Professor Emeritus of Mathematics at the University of California, Davis. He was born in Prague, Czech Republic, where he studied mathematics at Charles University (1955--60). He immigrated to the United States in 1965, and in 1966 received his Ph.D. from the University of Maryland, College Park. Dr. Pfeffer has worked at the Czechoslovak Academy of Sciences in Prague and has taught at the Royal Institute of Technology in Stockholm, George Washington University, and the University of California, Berkeley. In 1994--95 he was a Fulbright Lecturer at Charles University. His primary research areas are analysis and topology. Dr. Pfeffer is a member of the American and Swedish Mathematical Societies, and serves on the Academic Board of the Center for Theoretical Study at Charles University. He has written the books Integrals and Measures (Marcel Dekker, 1977), The Riemann Approach to Integration (Cambridge University Press, 1993), and Derivation and Integration (Cambridge University Press, 2001).