This research project examined the Library of Congress's responsiveness to new emerging fields of research, using a case study on women's studies in the mid 1960s and early 1970s. Specifically considered was the Library of Congress Subject Heading Division's timeliness in relation to scholarly literature published between 1963 and 1975. Samples consisted of 84 monographs and anthologies considered to be significant to the field of women's studies and published between 1963 and 1975. Terms and phrases from the works' title pages and tables of contents were matched with assigned Library of Congress subject headings. The results address the following questions: (1) Which subject headings have frequently been assigned to such works and what entry word do they possess?; (2) If the Library of Congress picked up the terminology of women's studies scholars, which terms were used and when?; and (3) What are the implications in terms of access? In terms of access, problems occurred with the use of broad headings with subheadings and the patrons' use of the words "woman" and "women"; the card cataloger as a result would have to search all entries under the broad headings to find the desired items. The number of new terms that became valid during the time period covered indicates the Library of Congress's efforts to keep current with the terminology of this emerging area of research. (Contains 31 references.) (Author/AEF)