This is the twenty-third volume in the series of Memorial Tributes compiled by the National Academy of Engineering as a personal remembrance of the lives and outstanding achievements of its members and foreign associates. These volumes are intended to stand as an enduring record of the many contributions of engineers and engineering to the benefit of humankind. In most cases, the authors of the tributes are contemporaries or colleagues who had personal knowledge of the interests and the engineering accomplishments of the deceased. Table of ContentsFront MatterWILLIAM G. AGNEWJOSEPH A. AHEARNTHOMAS R. ANTHONYEARL E. BAKKENVITELMO V. BERTEROGERRIT A. BLAAUWWALTER L. BROWNLEROY L. CHANGJACK V. CHRISTIANSENRICHARD J. COARKEITH H. COATSL. ERIC CROSSRALPH L. DISNEYREX A. ELDERROBERT R. EVERETTTHOMAS V. FALKIEPETER T. FLAWNYUAN-CHENG B. FUNGHCTOR GARCA-MOLINADONALD P. GAVER JR. BARRIE GILBERTSOLOMON W. GOLOMBMARY L. GOODROBERT K. GRASSELLIDONALD P. HEARTHLEE IACOCCAJAMES R. JOHNSONGEORGE E. KELLER IICHRISTOPHER C. KRAFT JR. WILLIAM W. LANGJAMES U. LEMKEJAMES D. LIVINGSTONRICHARD H. LYONRICHARD H. MacNEALALFRED E. MANNGEORGE K. MUELLNERROBERT M. NEREMROBERT E. NICKELLKARL H. NORRISDONALD W. PEACEMANEMIL PFENDERSUBBIAH RAMALINGAMERIC H. REICHLWALTER L. ROBBJOSEPH C. SALAMONERICHARD SCHERRERWARREN G. SCHLINGERLUCIEN A. SCHMIT JR. PETER G. SIMPKINSRAYMOND E. SMALLMANJAMES J. SPILKER JR. GARY K. STARKWEATHERROBERT M. STEINJAMES S. THORPWILLIAM F. TINNEYJAMES E. VAN NESSARTHUR F. VEINOTT JR. ANESTIS S . VELETSOSJOHN F. WELCH JR. HERBERT H. WOODSONRICHARD N. WRIGHTAPPENDIX