Ulrich's Periodicals Directory (ISSN 0000-0175, and ISSN 0000-2100) is the standard library directory and database providing information about popular and academic magazines, scientific journals, newspapers and other serial publications.
[1] The print version has been published since 1932, and was founded by Carolyn F. 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.
[2] 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.
Bowker, it moved to CSA, a fellow subsidiary of Cambridge Information Group, in 2006.