In 1994 the format was changed reducing the number of categories from twenty to nine. This is a very important and valuable indexing source for union publications. The Left Index . An index to periodicals on the left, which are important sources of information on contemporary labor struggles. Currently it indexes fifty-seven titles.
Access is by author with indexes for subjects and journal titles, and a separate book review index.
Z 7164 L1 R4 Reynolds, Lloyd George and Charles C. Killingsworth. The Official Journals, Convention Proceedings, and Constitutions of International Unions and Federations, 1850-1941. Johns Hopkins Press, 1944-45. This is a subject index to journals and convention proceedings of fifty international union and federations from the collections at Johns Hopkins University, the first university library to make an exhaustive effort to collect union publications. The indexing is not exhaustive but does include letters to the editor.