National Museum of Nuclear Science & History
Alfred “Al” Zeltmann was a member of the Special Engineer Detatchment (SED) at Los Alamos during the Manhattan Project.
Pearl Lemke worked for the Roane-Anderson Company.
G. E. Knutson worked for the United States Engineer District Office.
Paul J. Esterline was an engineer. He attended Ohio State University for two years, and then attended the Chicago Technical Institute in the late 1920s, learned engineering drafting there.