Columbia subject headings:
Civil defense--United States--History.
Disaster relief--United States--History.
United States. Army. Medical Department--History.
Harvard subject headings:
Civil defense--United States--History.
Disaster relief--United States--History.
United States. Army Medical Department (1968- )--History.
Princeton subject headings:
Civil defense--United States--History.
Disaster relief--United States--History.
United States. Army Medical Department (1968- )--History.