Columbia subject headings:
Harvard subject headings:
Gorbachev, Mikhail Sergeevich, 1931---Journeys--United States.
Soviet Union--Foreign relations--United States.
United States--Foreign relations--Soviet Union.
Visits of state--United States
Princeton subject headings:
Gorbachev, Mikhail Sergeevich, 1931-2022--Travel--United States.
Soviet Union--Foreign relations--United States.
United States--Foreign relations--Soviet Union.
Vists of state--United States.