Grand Rapids Ghost Hunters Society - A small group based in Southwest Michigan providing images from their own investigations and stories submitted by others. - http://www.grghs.50megs.com/Index.html
West Michigan Ghost Hunters Society - Leading non-profit paranormal team in West Michigan. Featured in "Ghost Stories Of Michigan" by Dan Asfar. - http://www.wmghs.com
GHOSM-Ghost Hunters Of Southern Michigan - A group of paranormal investigators based in southeast Michigan who conduct ghost hunts and investigate haunted houses and businesses. Services are free of charge. - http://www.ghosm.com
Grimstone Inc. - Paranormal Investigators - Details about the company, its history and investigation request. Services include field investigations, unexplained phenomena, history tracing and mythology and folklore. - http://www.grimstone-inc.com/