Literature by and about Karl Barth offers an online, searchable bibliography of literature by and about the Swiss-German theologian Karl Barth (1886-1968). It contains information about both primary and secondary literature. At present, the database contains most publications from 1995 onward and is kept up to date. Bibliographic references to books and dissertations published prior to 1995 are available in the database, those of articles and reviews are being added gradually.