Columbia subject headings:
Families--United States--History--20th century--Congresses.
Social change--United States--History--20th century--Congresses.
Social values--United States--History--20th century--Congresses.
United States--Social conditions--20th century--Congresses.
Harvard subject headings:
Families--United States--History--20th century--Congresses.
Social change--United States--History--20th century--Congresses.
Social values--United States--History--20th century--Congresses.
United States--Social conditions--20th century--Congresses.
Princeton subject headings:
Families--United States--History--20th century--Congresses.
Social change--United States--History--20th century--Congresses.
Social values--United States--History--20th century--Congresses.
United States--Social conditions--20th century--Congresses.