This study of periodical interlibrary loan in New Jersey focuses on access to and sharing of periodical information in the state-wide library networks and investigates the feasibility of providing online search services for such information. The three part study began with a survey of the library literature dealing with networking and an examination of the library network plans of 13 states including New Jersey. A chart comparing aspects of nine state plans and a summary and evaluation of individual state plans are included. The second part of the study involved data gathering in ten libraries in the New Brunswick area for the availability of periodicals and for periodical article interlibrary loan statistics for 1976. Percentages of interlibrary loan requests for periodical articles were examined for local public libraries, academic libraries, and two area libraries. Conclusions and recommendations from the literature search and data gathering, which are presented in the third part of the study, indicate a cost-benefit analysis of online service in area libraries, along with the collection of more complete and accurate management information for information service from periodicals. Appendices include the interview guide, photoduplication request form, and the Phase I study. (Author/CWM)