A comprehensive, unannotated listing of important English language materials about, or related to, Machine Readable Cataloging (MARC), from the King report up to October 1969. Citations of a few materials published later have been added because of their considerable and primary interest. News notes which are repetitive and of little value when the primary document is in hand have been excluded. The United States, Canada and the United Kingdom are the geographic limits. Citation sources included: (1) "Library Literature," (2) "Annual Review of Information Science and Technology," (3) "The Information Bulletin," (4) "Bibliography of Library Automation" and (5) miscellaneous bibliographies owned by the Library Education Experimental Project (LEEP). (NH)