Box 1: Folder 2: Report of the industrial research division on employee interviewing techniques and results and the supervisors' conference program. 1931. Section I of the Report on employee interviewing techniques...is missing.

Box 1: Folder 3: On a test to determine the effects of rest periods and hours of work on the relay assembly test group. Up to and including December 3, 1927. Indexed. Appendix missing.

Box 1: Folder 4: On a test to determine the effect of rest periods asd hours of work on the relay assembly test group. February 25, 1928. Indexed.

Box 1: Folder 5: On an investigation of rest periods, working conditions, and industrial efficiency. August 15, 1928. Indexed.

Box 1: Folder 6: Supplementary progress report on an investigation of rest pauses, working conditions, and industrial efficiency,. May 11, 1929. Indexed.

Box 1: Folder 7: (never completed or issued). 1931. A collection of notes, summaries, data, and graphs toward a report on rest periods, working conditions, physical and mental condition of workers; and other variables affecting output and efficiency; also, notes on methods used and kinds of data collected at Hawthorne.

Box 1: Folder 8: From just before the start of the Hawthorne study, to outline the goals of the project and the workers' role in it. 1932.

Box 1: Folder 9: 1920s.

Box 2: Folder 1: Piece rates and conversion factors for relays assembled in the relay assembly test room.