When first compelled to amass this material, I was immediately confronted with the simple fact that there is very little
information available about the history of polygraph instruments. When contacted, even the instrument manufacturers could
not give me a history of their instruments.
I have put together what I believe to be a factual and accurate history of the manufacture and use of these instruments,
but errors could have been made. If you have any information about these instruments that contradicts mine, please contact
me at the e-mail address below and let me know.
My record keeping is less than perfect. If you have made a donation to The Polygraph Museum in the past, and you
can see that it is included in the museum as an exhibit, and your name does not appear next to the instrument, please let
me know. I will make the appropriate changes to make sure you get credit for your donation.
My first effort in publishing this site was focused on getting thumbnail descriptions and photographs of all the instruments
onto the web page. The next step is to include more detailed descriptions of the instruments and their uses. If you recognize
your first instrument and have an interesting or amusing story about it, or maybe an interesting story about a case that was
solved with it, send me an email and tell me about it. I will make sure it gets included into the museum.
Terry J. Ball
Ball & Gillespie Polygraph
190 West Dayton, Suite #103
Edmonds, Washington 98020