Columbia subject headings:
Parkman, George, 1790-1849.
Webster, John White, 1793-1850.
Harvard subject headings:
Harvard University--Faculty--Crimes against.
Parkman, George, 1790-1849.
Trials (Murder)--Massachusetts--Boston
Webster, John White, 1793-1850--Trials, litigation, etc.
Princeton subject headings:
Evidence, Circumstantial.
Parkman, George, 1790-1849.
Trials (Murder)--Massachusetts--Boston.