The article shows the significance of retrospective indexes in the system of Siberian bibliography in the historical context. The authors highlight the history of formation and development of retrospective bibliography in the State Public Scientific Technological Library of the Siberian Branch of the Russian Academy of Sciences, starting from the 1960s. The article places the main emphasis on the implementation of major bibliographic projects of the State Public Scientific Technological Library of the Siberian Branch of the Russian Academy of Sciences: creation of a set of retrospective indexes and databases on bibliography of bibliographies, the history of book, librarianship and bibliography; preparation of the Union catalogue of Siberian and Far Eastern books as part of the national retrospective bibliography of Russia; creation of biobibliographic databases. The authors draw conclusions about the importance of various types of bibliographic products (electronic and printed) and outline the tasks on bibliographic activity of the State Scientific Technological Library of the Siberian Branch of the Russian Academy of Sciences in the field of retrospective bibliography.