Three articles describe procedures used for retrospective conversion: MITINET/retro system in Wisconsin and efforts to create statewide bibliographic database; retrocon process for Library Computer System circulation/resource-sharing system in Illinois academic libraries; use of REMARC to build online catalog at Johns Hopkins University. Authority…

Describes statewide use of MITINET, a microcomputer automation system created to aid resource sharing among small libraries and serve as tool for converting card catalog information to MARC format computer-readable files. Highlights include conversion stages, entering data on microfiche, vendor's role, local level, costs and system requirements,…