A study of the effects on public library circulation of putting a group of selected adult titles in a prime physical location is reported. It is hypothesized that public library circulation of these titles will be significantly greater when they are collected and placed in a prime location than when they are scattered on the shelves of even an open stack collection. The data for this study were collected over a 12 month period in the public libraries of Champaign and Urbana, Illinois. Phase one of the study (November 1, 1969, to April 30, 1970) was conducted simultaneously in both public libraries, and insofar as possible in the same manner. Phase two covered the six months from May 1, 1970, to October 31, 1970. The only intended difference between the two phases is that in phase two the Champaign library placed all adult copies of the titles in question on a book display rack just inside the door of the library and near the circulation desk. The circulation of the selected books in Champaign was found to be markedly higher in phase two than what it was in phase one, or in either phase one or phase two in Urbana. (Author/NH)