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PennWell

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 has an extensive offering of books, maps, directories and database services. In 2011 it acquired a data mapping company and also expanded its publications in the technology field.