William E. Boeing and Fred Rentschler standing in front of an airplane, September 25, 1929. William Edward Boeing was an American aviation pioneer who founded The Boeing Company in 1916. Frederick Brant Rentschler, born in Hamilton, Ohio, was an American aircraft engine designer, aviation engineer, industrialist, and the founder of Pratt & Whitney Aircraft. He is also a co-founder of United Aircraft and Transport Corporation, the predecessor of United Technologies Corporation. Photo by the Los Angeles Times. From the Los Angeles Times Photographic Archive, UCLA Library.