Gulf Publishing Co. (1916 - present), based in Houston, Texas, is a leading publisher of magazines and books related to the oil and gas industry. Founded in 1916 by teacher and journalist Ray Lofton Dudley, its monthly publications now include World Oil, Hydrocarbon Processing, Pipeline and Gas Journal, and the Petroleum Economist, all of which are highly influential and widely read by industry specialists. The firm has changed somewhat over the years, operating as a subsidiary of Euromoney Institutional Investor from 2001 until a 2016 and spinning off parts of the business, such as book publishing. It rebranded in 2018 as Gulf Energy Information, but its core function as one of the world's leading sources of specialized information on the energy industry remains.