GENERAL EDITORS

Richard C. Boys, University of Michigan

Edward Niles Hooker, University of California, Los Angeles

H. T. Swedenberg, Jr., University of California, Los Angeles

ASSISTANT EDITOR

W. Earl Britton, University of Michigan

ADVISORY EDITORS

Emmett L. Avery, State College of Washington

Benjamin Boyce, University of Nebraska

Louis I. Bredvold, University of Michigan