Untold. America's truth detector / Polygraph machine :

In 1921, John Augustus Larson, a medical student and police officer in Berkeley, California invented a machine to help detectives determine if someone was telling the truth - or lying. He called it - the Polygraph.

Bibliographic Details
Format: Video
Language:English
Language Notes:In English.
Published: Derry, Northern Ireland : Makematic, 2020.
Series:Academic Video Online
Subjects:
Online Access:Connect to this streaming video (Alexander Street Press)
Description
Summary:In 1921, John Augustus Larson, a medical student and police officer in Berkeley, California invented a machine to help detectives determine if someone was telling the truth - or lying. He called it - the Polygraph.
Item Description:Title from resource description page (viewed June 9, 2021).
"Artifacts".
Physical Description:1 online resource (3 minutes)
Playing Time:00:02:06