Circulation data from the Virginia Tech Libraries were analyzed to determine the extent of continuity or change between the author's study of the use of subject collections in 1982 and the present. Book circulation has declined, largely due to much less use by undergraduates. The overall profile of subject use has changed in ways traceable to changes in the population of active library users. Disciplinary groups who still rely on library monographs do so in ways strikingly similar to their behavior in 1982, and the findings strongly replicate the earlier findings that were most suggestive for library practice and the sociology of knowledge.