Columbia subject headings:
Etching, French--19th century--Exhibitions.
Pissarro, Camille, 1830-1903--Exhibitions.
Harvard subject headings:
Etching, French--19th century--Exhibitions.
Pissarro, Camille, 1830-1903--Exhibitions.
Princeton subject headings:
Etching, French--19th century--Exhibitions.
Pissarro, Camille, 1830-1903--Exhibitions.