Abbey Ghost Hunters  (U.K)
After Dark Paranormal Investigations
All About Ghosts
American Association of Paranormal Investigations
American Association of Paranormal Research
Advanced Ghost Hunters of Seattle-Tacoma
American Ghost Society
American Society for Psychical Research  (New York)
Arizona Paranormal Investigations  (Arizona)
Arkanasas Paranormal Investigations  (Arkanasas) 
Aware Foundation: Paranormal Research
Bay Area Paranormal Investigations  (California)
Berkshire Paranormal  (Massachussetts)
C.C.P.I. Paranormal Investigations  (Colorado and Utah)
Cape and Islands Paranormal Research Society  (Massachussetts)
Central Berkshire Ghost Hunters
Central Ohio Ghost Squad  (Lancaster, Ohio)
Chippewa Valley Paranormal Investigations (Chippewa Falls Wisconsin)
Coast to Coast A.M Paranormal Radio With George Noorey
Connecticut Paranormal Investigators  (Connecticut)
Connecticut Paranormal Research Team  (Connecticut)
Corpus Christi Spook Central (Corpus Christi Texas)
Crossroads Paranormal
D&A Paranormal Investigators (New Jersey)
Daytona Beach Paranormal Research Group, INC (Daytona Beach Florida)
Delaware County Paranormal Research (Delaware County, Pennsylvania)
East Central Wisconsin Paranormal Investigations (Wisconsin)
East Coast Hauntings Organization (Martinsburg, West Virginia)
Maggies light
Midwest Preternatural Research
MPG (Maryland)
Washington Street Books (Havre de Grace, MD)