AAG (Association of American Genealogists) International Research, LLC: Professional genealogists utilizing the LDS Family History Library in Salt Lake City, Utah. Includes Native American, probate, and forensic investigations.
Accelerated Genealogy: Professional investigators listed by experience, research specialty, region, and billing rate. Mainly American States but does include options for England and Italy. Based in Salt Lake City, Utah USA.
Association of Scottish Genealogists and Record Agents: Index of professional investigators specializing in Scottish family history. Includes full contact details to arrange private commissions.
Connecticut Professional Genealogists Council: Providing a registered list of individuals and organisations. Includes Connecticut County and other New England regions, plus various country and ethnic specialties.