They have Jefferson's polygraph at the Smithsonian, an idea before its time! https://en.wikipedia.org/wiki/Polygraph_(duplicating_device) https://en.wikipedia.

They have Jefferson's polygraph at the Smithsonian, an idea before its time! https://en.wikipedia.org/wiki/Polygraph_(duplicating_device) https://en.wikipedia.org/wiki/Polygraph_(duplicating_device)