Columbia subject headings:
Harvard subject headings:
Constitutional amendments--United States
Representative government and representation--United States
Statehood (American politics)
Suffrage--Washington (D.C.)
Washington (D.C.)--Politics and government--1970-
Princeton subject headings:
Constitutional amendments--United States.
Representative government and representation--United States.
Statehood (American politics)
Suffrage--Washington (D.C.)
Washington (D.C.)--Politics and government--1967-1995.