Carrier, Willis Haviland (26 November 1876–07 October 1950), inventor, was born in Angola, New York, the son of Duane Williams Carrier, a dairy and fruit farmer, and Elizabeth Haviland, a schoolteacher. From an early age, Carrier showed an interest and ability in mechanics. Graduating in 1893 from Buffalo’s Central High School, he was eager to pursue an engineering course at Cornell University, but the onset of a nationwide depression forced him to spend almost four years teaching at a local school....
Marsha E. Ackermann
Robert C. Hayden
Crosthwait, David Nelson, Jr. (27 May 1898–25 February 1976), mechanical engineer, was born in Nashville, Tennessee, the son of Dr. David Nelson Crosthwait, and Minnie Harris. He attended elementary school and graduated from high school in Kansas City, Missouri.
Crosthwait received a Bachelor of Science degree in mechanical engineering from Purdue University in 1913. That same year he began lifelong employment with the C. A. Dunham Company (later Dunham-Bush) in Chicago, where he distinguished himself nationally in the field of heating, ventilation, and air-conditioning (HVAC) technology. By 1915 he had been appointed to the position of engineering supervisor, and by 1919 he had risen to the position of research engineer. In 1920 Crosthwait received a Master of Science degree in engineering from Purdue University....