Columbia subject headings:
Harvard subject headings:
Blackwood (Wales)--Pictorial works.
Blackwood (Wales)--Social life and customs--Pictorial works.
Sirhowy River Valley (Wales)--Pictorial works.
Sirhowy River Valley (Wales)--Social life and customs--Pictorial works.
Princeton subject headings:
Blackwood (Wales)--Description--Views.
Blackwood (Wales)--Social life and customs--Pictorial works.
Sirhowy River Valley (Wales)--Description and travel--Views.
Sirhowy River Valley (Wales)--Social life and customs--Pictorial works.