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deputy officer in charge of the Ship Instrumentation Group there until 1947.

After the war, Lynn joined the faculty at Lehigh University as a research instructor in civil engineering. He received his M.S. in 1949 and Ph.D. in 1952, both from Lehigh. He was appointed assistant professor in 1952, full professor in 1957, and Distinguished University Professor in 1978. He became associate director of Fritz Engineering Laboratory in 1952 and director in 1960; he continued to serve the laboratory with distinction until 1984. He became Professor Emeritus in 1988.

As director of the Fritz Engineering Laboratory, he led research on the behavior and design of steel structures. His first textbook, Plastic Design of Steel Frames (John Wiley & Sons), was published in 1958. He was editor and co-author of the American Society of Civil Engineers (ASCE) Manual 41, Plastic Design in Steel, which was published in 1961 and revised in 1971. He led the Lehigh team as editor of Structural Steel Design, published by Ronald Press in 1964. He was also editor in chief of several editions of Structural Stability: A World View and The Planning and Design of Tall Buildings, a monograph in five volumes published by McGraw-Hill. Altogether, Lynn was the author or co-author of more than 200 papers, articles, and books.

Lynn’s stellar reputation and his promotion of research at Lehigh attracted graduate students from all over the United States and more than 30 other countries. He made it a point to meet with graduates of Lehigh during his many travels abroad.

In 1944, after the collapse of the Quebec Bridge during construction, the Structural Stability Research Council was organized to develop knowledge about the behavior and strength of compression elements. Lynn was director of the council for 23 years, from 1970 to 1993.

In 1969, Lynn founded the Council on Tall Buildings and Urban Habitat and served as director until he became Director Emeritus in 2000. Through his leadership and passionate dedication, the council brought together architects, structural engineers, construction workers, environmental experts, sociologists, and policy makers in an effort to provide a rationale for the construction of high-rise structures.

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