Columbia subject headings:
Trials (Impeachment)--United States.
Harvard subject headings:
Belknap, William W. (William Worth), 1829-1890--Trials, litigation, etc.
Trials (Impeachment)--United States
United States. Congress (44th, 1st session : 1876). Senate.
Princeton subject headings:
Belknap, William W. (William Worth), 1829-1890--Trials, litigation, etc.
Trials (Impeachment)--United States.