He contributes cryptozoology columns, "On the Trail," to the London-based magazine Fortean Times, and "Mysterious World" to Fate, as well as articles to The Anomalist and Fortean Studies. In 2000, he ...
The Encyclopedia of Extraordinary Social Behavior (Anomalist Books, 2009) with historian Hilary Evans, and American Intolerance: Our Dark History of Demonizing Immigrants (Prometheus, 2018).