The Heritage Hunters Society -- Great group and friends, Founded by Michael La Chiana in 1992
San Diego Paranormal Eye -- Founded in 2011 by Matthew Barron, located in San Diego, California
San Diego Haunted -- Great website discussing haunted locations in San Diego, California
Steel Town Paranormal -- Founded in 2009 by Melanie & Chris Durish, located near Pittsburg, Pennsylvania.
Sinister Sightings Paranormal Society & Revenant Research Group -- Founded in 2015 and based out of Reno, Nevada