Trained as a historian and archaeologist, Marc has worked at history museums and community colleges all over the US. His historical interests, which have led him to author numerous historical articles, academic and popular, for publications in the US and Europe, range from architectural history, to the Spanish Empire, to Mesoamerica and the pre-Hispanic North American Southwest. His current historical project is a book about the Presidio (i.e., old Spanish fort) San Agustin del Tucson in Tucson, Arizona. Additionally, Marc likes to shoot photographs, paint, build models, and write cosmicist fantasy in the tradition of HP Lovecraft. In 2017 he published his first collection of stories and novellas entitled "The Esoteric Order of Dagon."