Columbia subject headings:
Jackson, Charles T. (Charles Thomas), 1805-1880.
Morse, Samuel Finley Breese, 1791-1872.
Telegraph.
Harvard subject headings:
Jackson, Charles T. (Charles Thomas), 1805-1880
Morse, Samuel Finley Breese, 1791-1872
Telegraph
Princeton subject headings:
Jackson, Charles T. (Charles Thomas), 1805-1880.
Morse, Samuel Finley Breese, 1791-1872.
Telegraph.