O'Dwyer's 2020 Rankings of PR Firms -- Deadline: Fri., Mar. 6 (Ranking Instructions)

Directory Publishers

    O'Dwyer's database is where communicators shop online for the companies that supply the PR industry with products and services. The following directory publishers specialize in research designed to help PR professionals.

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Career Press, 65 Parker St., Ste. 7, Newburyport, MA 01950. 978/465-0504. www.careerpress.com.

Columbia Books & Information Services, 1560 Wilson Blvd., #825, Arlington, VA 22209. 888/265-0600. www.columbiabooks.com.

Grey House Publishing, 4919 Route 22, P.O. Box 56, Amenia, NY 12501. 800/562-2139; 518/789-8700. www.greyhouse.com. Leslie Mackenzie, Publisher.

Infobase, 132 W. 31st St., New York, NY 10001. 800/322-8755. www.infobase.com. Mark D. McDonnell, Pres. & CEO.

Leadership Connect, 1407 Broadway, #318, New York, NY 10018. 212/627-4140. www.leadershipconnect.io.

O'Dwyer's, 271 Madison Ave., New York, NY 10016. 212/679-2471; fax: 212/683-2750. www.odwyerpr.com. John O'Dwyer, Publisher.