Early in his professional career he worked in Tampico, Mexico for Gulf Oil as a civil engineer. He designed a building for prefabrication that was widely used by Gulf and other oil companies.[1]: 4–5
In 1935, he met with President Franklin D. Roosevelt, who was "fascinated" with David's ideas.[1]
Matanuska Colony Community Center, roughly bounded by S. Colony, E. Firewood, S. Eklutua, E. Elmwood, S. Denali and a line N of properties on E. Dahlia, Palmer, Alaska (Williams, David), NRHP-listed[2]