Object Type: Folder
In Folder: Box 004
George L. Mavredes, Special Investigator for the Virginia State Police, demonstrates the use of the B. & W. Electrical Cyclograph (lie detector) in Professor Ruth Harrell's psychology class. The student submitting to the test is Charles Graves. Mavredes records the results while Professor Harrell and Professor Paul Reich (standing) observe.
1957-10-23
