The Commission on Preservation and Access sought to increase its knowledge of Latin American microfilms produced and available outside of Latin America itself by studying Latin Americanist microfilming activity in the United States. The immediate goal of this study was to minimize unnecessary Latin American filming duplication. This report summarizes the current state of this type of microfilming activity in the United States, and, to a lesser degree, in other world areas. After briefly reviewing the historical context of microfilm production and its bibliographic control, the report points out subject and format areas in which filming has been particularly extensive. It also suggests strengths and weaknesses of filming efforts to date and indicates the principal institutional and commercial sources of Latin Americanist microfilm masters. The five appendices present the following information: (1) list of the major microform sets of Latin Americanist emphasis; (2) summary results of sample surveys concerning preservation information; (3) text of the questionnaire and the survey responses; (4) the Princeton cataloging record for a collection of ephemeral materials from the Research Libraries Information Network; and (5) a list of recent Latin Americanist preservation microfilming projects funded by grants. A list of scholarly and historical collections that have been preserved concludes the document. Each entry contains a brief description of the preserved collection, the name and location of the institution that received the grant funds for preservation, a shortened name of the granting agency and the date of grant. Further information about funding sources is also included. (MAB)