The Library of American Civilization (LAC) is the first in a series of microfiche collections developed around a central theme. The collection consists of 12,000 microbooks on ultrafiche. This study aimed to produce quantitative data leading to an evaluation of this collection and guidelines for evaluating collections of this type. Random entries from the shelf list, author catalog, title catalog, subject catalog, biblioguide index, fiche catalogs, and catalog cards of the collection were examined. The study concluded that these bibliographic control devices are of good quality as a whole; however, a greater percentage of errors exists in cataloging supplied by the publisher as compared with the "Catalog of Books Represented by Library of Congress Printed Cards, Issued to July 31, 1942." Catalog card errors were found difficult to correct due to low quality card stock, and lack of title entries limited access points to the collection. Despite these problems, the study concluded that the collection could serve a useful purpose in academic libraries that do not have this type of research material in their collections. (KP)