A bibliography of Bibliographies lists bibliographies which direct readers to useful bibliographies through subject, name of the individual place, institution, etc. The bibliographies referred to may be in the form of a separately published book or part of the book or part of a periodical article or some other type of document. As the number of bibliographies published every year is large, therefore, bibliographies of bibliographies are highly selective in nature.
- Bibliographic index, cumulative bibliography of bibliographies, 1937-, New York, Wilson, 1938-.
- Index bibliographicus, 4th edition, The Huge, Federation Internationale de Documentation, 1959 to date.