Research notes; drafts and final versions of reports to funding agencies; drafts and final minutes of the project's Advisory Committee on the Documentation of Postwar Science. The study focussed on four of the national laboratories of the Department of Energy (DOE), whose precursors were the Atomic Energy Commission and the Energy Research and Development Administration. In addition, project staff visited or surveyed some 40 other DOE laboratories and installations, and investigated history and records management at other science-related federal agencies. More than eight person-years were spent on site at DOE's Argonne, Brookhaven, and Oak Ridge national laboratories by project historian Allan Needell, and at Lawrence Berkeley Laboratory by project archivist Jane Wolff. The project developed the first appraisal guidelines for records that should be retained for postwar scientific records. Other project staff: Joan N. Warnow, project director, and Spencer R. Weart, associate project director. The project's interim reports were: Preservation of Documents at Government Contract Laboratories, Sources for the History of Physics at Brookhaven National Laboratory: A Preliminary Inventory; Preservation of Documents at Oak Ridge National Laboratory; The Preservation of Historical Records of Scientific Research under the Federal Government; Preservation of Documents at Lawrence Berkeley Laboratory, and Preservation of Documents at Argonne National Laboratory. The final reports were: A Study of Preservation of Documents at Department of Energy Laboratories; Guidelines for Records Appraisal at Major Research Facilities; and A Handbook for Secretaries at Department of Energy Contract Laboratories.