Columbia subject headings:
Great Britain--History--Victoria, 1837-1901--Pictorial works.
Portrait photographers--Great Britain--History--19th century.
Portrait photography--Great Britain--History--19th century.
Harvard subject headings:
Ambrotype
Daguerreotype
Miniature cases
Miniature cases--Great Britain--Design and construction--History--19th century.
Miniature cases--Great Britain--History--19th century.
Portrait frames--Great Britain--Design and construction--History--19th century.
Portrait frames--Great Britain--History--19th century.
Portrait photographers--Great Britain--History--19th century.
Portrait photography--Great Britain--History--19th century.
Portrait photography--Marketing.
Princeton subject headings:
Great Britain--History--Victoria, 1837-1901--Pictorial works.
Portrait photographers--Great Britain--History--19th century.
Portrait photography--Great Britain--History--19th century.