This study at a medium-sized academic library was based on the assumption that usage of the pamphlet collection could be increased by weeding to create a smaller more accessible collection, reorganization to create a more browsable collection, and promotion to increase reference librarians' awareness of the collection's contents. Approximately 10,000 of the 17,000 pamphlets in the general collection were weeded by January 1978, the remaining pamphlets were reorganized into a revised set of subject categories, and in-house promotion was increased. The study was conducted over three 4-month periods: September-December 1977, February-May 1978, and February-May 1979, with usage measured by the number of shelf displacements of each pamphlet during the test periods. Patrons were instructed not to reshelve materials and as each item was reshelved by staff, its use was tallied by subject category. Use of the collection did increase significantly over the three time periods, although no consistent use pattern within subject categories was discerned. Appendices provide a list of subject categories and instructions for users of the pamphlet collection. (RAA)