The print version has been published since 1932, and was founded by Carolyn Ulrich, chief of the periodicals division of the New York Public Library as Periodicals Directory: A Classified Guide to a Selected List of Current Periodicals Foreign and Domestic.
It is now also supplied on-line as Ulrichsweb, which provides web-based and Z39.50 linking to library catalogs. The online version includes over 300,000 active and current periodicals.
Coverage is international, with some emphasis on English-language publications. The information is derived from the publishers and verified by the journal. It includes
Earlier published by R.R. Bowker, it moved to CSA, a fellow subsidiary of Cambridge Information Group, in 2006. Following the merger of CSA and ProQuest, Ulrich's moved to ProQuest subsidiary Serials Solutions.