Columbia subject headings:
Artists' spouses in art--Exhibitions.
Liebermann, Martha, 1857-1943--Portraits--Exhibitions.
Liebermann, Max, 1847-1935.
Harvard subject headings:
Artists' spouses--Germany--Biography--Exhibitions.
Liebermann, Martha, 1857-1943--Exhibitons.
Liebermann, Max, 1847-1935--Exhibitions.
Princeton subject headings:
Artists' spouses--Germany--Biography--Exhibitions.
Liebermann, Martha, 1857-1943--Exhibitions.
Liebermann, Max, 1847-1935--Exhibitions.