NPS Reading List Twentieth Century Building Materials:
The extraordinary, and often violent, economic and political changes from 1900 to 1950 produced marked changes in the way Americans lived. The invention of new materials resulted in new
The Digital Research Library of Illinois History Journal™ : The
Right after the war, though, his first priority was manufacturing porcelain-enameled panels for gas stations until the bureaucracy in Washington denied him an allocation of steel.