Columbia subject headings:
Harvard subject headings:
Authors, French--19th century--Correspondence
Mazel, Henri, 1864-1947--Correspondence.
Rebell, Hugues, 1867-1905--Biography--Careers.
Rebell, Hugues, 1867-1905--Correspondence.
Rebell, Hugues, 1867-1905--Knowledge--Communications.
Princeton subject headings:
Ermitage.
Mazel, Henri, 1864-1947.
Rebell, Hugues, 1867-1905--Correspondence.