Columbia subject headings:
Lincoln Heritage Trail--Description and travel.
Lincoln, Abraham, 1809-1865--Public opinion.
Lincoln, Abraham, 1809-1865.
Morris, Jan, 1926-2020--Travel--Illinois.
Morris, Jan, 1926-2020--Travel--Indiana.
Morris, Jan, 1926-2020--Travel--Kentucky.
Presidents--United States--Biography.
Public opinion--United States--History--19th century.
Public opinion--United States--History--20th century.
Harvard subject headings:
Lincoln Heritage Trail--Description and travel.
Lincoln, Abraham, 1809-1865
Lincoln, Abraham, 1809-1865--Public opinion.
Morris, Jan, 1926-2020--Travel--Illinois.
Morris, Jan, 1926-2020--Travel--Indiana.
Morris, Jan, 1926-2020--Travel--Kentucky.
Presidents--United States--Biography.
Public opinion--United States--History--19th century
Public opinion--United States--History--20th century
Princeton subject headings:
Lincoln, Abraham, 1809-1865.
Presidents--United States--Biography.