Distress Services UK - Polygraph examiner in Leatherhead, Surrey, UK. polygraphs.co.uk
Polygraph Investigative Services - Singapore polygraph company providing polygraph testing services and training. www.polygraphis.com
Southwest Polygraph Service - Fort Worth, Texas agency advertising polygraph examinations, instant drug tests, and psychological profile analysis. pages.sbcglobal.net/donmarsh
Wygant Polygraph - James R. Wygant, retired polygraph examiner in Portland, Oregon who still teaches and does presentations. home.earthlink.net/~jrwygant
