ACKNOWLEDGMENTS FOR THE PHOTOGRAPHS
ISAAC L. AUERBACH, by Drexel University, Philadelphia, Pennsylvania
WALTER C. BACHMAN, by Blackstone-Shelburne, New York
JOHN VALENTINE BREAKWELL, courtesy of the News and Publications Service, Stanford University, Stanford, California
HOWARD DAVIS EBERHART, by Ed Kirwan Graphic Arts, Berkeley, California
A. PHARO GAGGE, by Rogers Studio, New Haven, Connecticut
PETER HAASEN, by Photo-Steiner, Göttingen, Germany
EDWIN HERBERT LAND, by Naomi Savage, courtesy of the Rowland Institute for Science, Inc.
HERBERT G. MACPHERSON, courtesy of Oak Ridge National Laboratory, Oak Ridge, Tennessee
CLARKSON H. OGLESBY, by Peter R. Hughes, Palo Alto, California
KLAUS OSWATITSCH, by Photograph Kobé, Vienna, Austria
EDUARD C. PESTEL, by Studio für Werbung Mode Journalistische Illustration Photographie Joachim Giesel, Hannover, Germany
GORDON G. ROBECK, by Keller Studio, Cincinnati, Ohio
HENRY A. SCHADE, by Ed Kirwan Graphic Arts, Berkeley, California
MONROE EDWARD SPAGHT, by Shell Photographic Service, Shell Centre, London, England
FREDERICK HENRY TODD, courtesy of the U.S. Navy