Columbia subject headings:
Harvard subject headings:
Artists--Germany--Biography.
Expatriate artists--England--Biography.
Keyl, Friedrich Wilhelm, 1823-1871--Catalogs.
Keyl, Friedrich Wilhelm, 1823-1871.
Princeton subject headings:
Artists--England--Biography.
Artists--Germany (West)--Biography.
Keyl, Friedrich Wilhelm, 1823-1871--Catalogs.
Keyl, Friedrich Wilhelm, 1823-1871.