HUSBAND OF MURDERED WOMAN SUBMITS TO LIE DETECTOR TEST
San Francisco, California (JFK+50) On June 10, 1922, the Evening Star reports a sphymomanometer, or lie detector*, was used by San Francisco Police yesterday to determine if the husband of a woman who was murdered while riding in the family car on May 30th is telling the truth about his innocence in her death.
Mr. Henry Wilkens, who is not being detained, submitted voluntarily to the lie detector examination. The inventor of the machine, John Larson, was present.
Tubes ran from the arm and heart into the instrument, and "no nervous tension" was recorded when Mr. Wilkens answered questions related to the crime.
*Lie detector, or polygraph, measures & records blood pressure, pulse rate, respiration to determine if a person is telling the truth when answering a series of questions.
SOURCE
"Husband Tells Truth, Did Not Murder Wife 'Blood Machine' Shows," The Evening Star, Washington, D.C., June 10, 1922, Chronicling America, Library of Congress, www.loc.gov/
