This annotated bibliography, aimed at acquisitions and collection development librarians, gathers and organizes the scattered materials on performance evaluation of library material vendors (i.e., jobbers, wholesalers, serial agents, and publishers). The authors, the Vendor Study Group of the Association for Higher Education of North Texas, cite the most significant items found on vendor performance written between 1955 and the first half of 1987. Excluded are citations concerned with approval plans and those with marginal relevancy to the subject. The bibliography is organized into two categories: (1) Methodologies and Studies and (2) Supporting Materials.