Columbia subject headings:
Agassiz, Louis, 1807-1873.
Photography in anthropology--19th century--Political aspects.
Photography--Social aspects--19th century.
Portrait photography--19th century.
Thayer Expedition (1865-1866)
Harvard subject headings:
Agassiz, Louis, 1807-1873.
Photography--Social aspects--19th century.
Thayer expedition, 1865-1866.
Princeton subject headings:
Agassiz, Louis, 1807-1873.
Photography--Social aspects--19th century.
Thayer Expedition (1865-1866)