Edwin S. Munger, professor of geography, emeritus, at the California Institute of Technology (Caltech), passed away peacefully June 15 at his home in Pasadena, California. He was 88 years old.

R. David Middlebrook, emeritus professor of electrical engineering at the California Institute of Technology (Caltech), passed away on April 16. He was 80 years old.

F. Brock Fuller, emeritus professor of mathematics at the California Institute of Technology (Caltech), died on November 6 at the Rafael Convalescent Hospital in San Rafael, California, four years after being diagnosed with diffuse Lewy body disease. He was 82.

Hans Wolfgang Liepmann, a pioneering researcher and passionate educator in fluid mechanics, passed away at the age of 94. Widely honored for his contributions to aeronautics, Liepmann came to Caltech in 1939 and was the third director of Caltech's Graduate Aeronautical Laboratories (GALCIT), from 1972 to1985.