Columbia subject headings:
Africans--Brazil--Pictorial works.
Brazil--Social conditions--Pictorial works.
Portrait photography--Brazil--History--19th century.
Portrait photography--Brazil--History--20th century.
Slavery--Brazil--Pictorial works.
Slaves--Brazil--Pictorial works.
Harvard subject headings:
Africans--Brazil--Pictorial works.
Brazil--Social conditions--Pictorial works.
Portrait photography--Brazil--History--19th century.
Portrait photography--Brazil--History--20th century.
Slavery--Brazil--Pictorial works.
Slaves--Brazil--Pictorial works.
Princeton subject headings:
Africans--Brazil--Pictorial works.
Brazil--Social conditions--Pictorial works.
Portrait photography--Brazil--History--19th century.
Portrait photography--Brazil--History--20th century.
Slavery--Brazil--Pictorial works.
Slaves--Brazil--Pictorial works.