Arthur O'Sullivan is a professor of economics at Lewis and Clark College in Portland, Oregon. After receiving his B.S. in economics at the University of Oregon, he spent two years in the Peace Corps, working with city planners in the Philippines. He received his Ph.D. in economics from Princeton University in 1981 and has taught at the University of California, Davis, and Oregon State University, winning several teaching awards at both schools. He recently accepted an endowed professorship at Lewis and Clark College, where he teaches microeconomics and urban economics. He is the author of the