Columbia subject headings:
Greenough, Henry, 1807-1883.
Greenough, Horatio, 1805-1852.
Harvard subject headings:
Greenough, Henry, 1807-1883
Greenough, Horatio, 1805-1852
Princeton subject headings:
Greenough, Henry, 1807-1883.
Greenough, Horatio, 1805-1852.