Books. The Rowman & Littlefield Publishing Group, a large independent book publisher in the US, has acquired the assets of New York state-based Prometheus Books. Prometheus was founded in 1969 by Paul Kurtz and now has a backlist of 1700 titles under both the Prometheus and Humanity imprints. The titles cover areas including popular science, philosophy, atheism, history, current events and true crime. In November 2018, Prometheus sold its fiction imprints to StartPublishing. The son of the founder, Jonathan Kurtz will continue to run editorial acquisition. Rowman & Littlefield was founded in 2013 in London, is now headquartered in Washington DC, and currently publishes around 2,200 new titles each year.