Project Intrex is a program of information transfer experiments directed toward new services and facilities for people who seek information in large libraries. The Project Intrex program includes: (1) the assembly and organization of an information store of sufficient size; (2) the development of the essential facilities for storing, retrieving, transmitting and displaying the information; (3) the study of the operations and reactions of users under varying conditions and (4) the design of user aids for a library providing both machine access and conventional services. (Author/MM)