Economic survey of the book industry, 1930-1931,

Mode of access: Internet.

The American library annual 1911/12-1917/18 : including list of American libraries of over 5000 volumes : libraries of Latin America : library schools and short courses : library and book-trade periodicals and organizations : book publication statistics, etc.

Superseded by American library directory 1923.

Die verlegung der büchermesse von Frankfurt am Main nach Leipzig,

Literaturverzeichnis": p. [v]-vi.

Clegg's international directory of the world's book trade

Imprint varies

The book-hunter in London: historical and other studies of collectors and collecting.

Mode of access: Internet.