Columbia subject headings:
Harvard subject headings:
Documents on microfilm--Indexes.
Publishers and publishing--England--London--History--Sources--Indexes.
Sonnenschein (Swan) & Company, London--Archives.
Sonnenschein, William Swan, 1855-1931--Manuscripts--Indexes.
Princeton subject headings:
Sonnenschein (Swan) & Company, London.
Sonnenschein, William Swan, 1855-1931.