Columbia subject headings:
Massachusetts--Politics and government--1775-1783.
Palfrey, John Gorham, 1796-1881.
United States. Congress--Elections, 1848.
United States. National Diabetes Advisory Board. Congress--Elections, 1848.
Harvard subject headings:
Massachusetts--Politics and government--1775-1865.
Palfrey, John Gorham, 1796-1881.
United States--Politics and government--1845-1849.
Princeton subject headings: