PennWell Corporation is a family-owned, diversified business-to-business publisher founded in 1910 and based in Tulsa, Oklahoma. PennWell publishes 45 business-to-business magazines and newsletters, conducts over 60 conferences and exhibitions on six continents, and also offers books, maps, directories and database services. In 2011 it acquired a data mapping company and also expanded its publications in the technology field. The company, originally called the Petroleum Publishing Company and owned by Pennsylvanian Patrick Boyle, began in 1910 with the acquisition of a magazine based in Beaumont, Texas, called Oil Investors Journal; Boyle moved the publication to Tulsa and renamed it Oil & Gas Journal. Boyle died in 1920, and was succeeded first by his son-in-law Frank T. Lauinger, and then, in 1932, by his grandson P.C. Lauinger, who led the Journal to increasing financial success, established a number of other petroleum-oriented publications, and acquired publications in the dental care field. P.C. Lauinger remained in control of the company until his death in 1988; thereafter his son-in-law, Robert Biolchini, led the company until 2015, when Mark Wilmoth was elected president and CEO while Biolchini became chairman of the board.