Imbordino Polygraph Examinations, LLC - Certified polygraph testing service based in Georgia, but examinations can be administered anywhere. Expert polygraph witness and former federal polygraph supervisor.
American Polygraph Association (APA) - Professional organization for polygraph specialists. Site includes code of ethics, standards of practice, and information about training and polygraph issues.
Maryland Institute of Criminal Justice Polygraph - Maryland Institute of Criminal Justice offers polygraph training accredited by the American Polygraph Association and meets basic education standards of ASTM.
American Polygraph Association - Organization dedicated to providing a valid and reliable means to verify the truth and establish the highest standards of moral, ethical, and professional conduct in the polygraph field.
DoD Polygraph Institute - US Department of Defense institute in Fort Jackson, South Carolina which does polygraph research and trains federal polygraphers.
Polygraph Law Resource Page - Legal documents and testimony concerning the admissability of polygraphs in US legal system by Professor Charles R. Honts of Boise State.