Tri-Cat is the online public access catalog (OPAC) of the Rockefeller University Library. The system is Innovative Interfaces, Inc. which has a menu-driven user interface. Tri-Cat provides information about books and journals availability and location in the library. This Telnet and Web-based catalog is the integrated library system which electronically links the the OPACs of Rockefeller University, Memorial Sloan-Kettering Cancer Center and Weill Cornell Medical College together.