The index is a source document for the retrieval of references to the known literature which has resulted from research grants awarded under the Federal Water Pollution Control Act during 1962, 1963, and 1964. It is designed to provide a useful record of the literature references credited to water pollution control research grant projects, and to facilitate communication between investigators. The 545 references to publications and reports have resulted from 143 projects, an average of 3.8 per grant.