Columbia subject headings:
Horsemen and horsewomen in art--Exhibitions.
Horsemen and horsewomen--America--Exhibitions.
Horses--America--History--Exhibitions.
Harvard subject headings:
Horsemen and horsewomen in art--Exhibitions.
Horsemen and horsewomen--America--Exhibitions.
Horses--America--History--Exhibitions.
Princeton subject headings:
Horsemen and horsewomen--America.
Horses--History--America.