American Association of Professional Landmen (http://aaplconnect.landman.org/home?ssopc=1).
American Bar Association, Section of Environment, Energy and Resources (https://www.americanbar.org/groups/environment_energy_resources/).
Association of International Petroleum Negotiators (AIPN) (http://www.aipn.org/). Contains reports and model contract forms, which are free to AIPN members and available for purchase by non-members.
American Petroleum Institute (API) (http://www.api.org). Some materials require subscription.
Center for American and International Law (formerly the Southwestern Legal Foundation), Institute for Energy Law (IEL) (http://www.cailaw.org/iel/index.html).
Centre for Energy, Petroleum and Mineral Law and Policy (CEPMLP), University of Dundee (http://www.dundee.ac.uk/cepmlp/).
Energy & Mineral Law Foundation (http://www.emlf.org/). “A non-profit educational organization providing information on legal issues related to the energy and mineral industry through workshops, specialty programs, publications and electronic information.”
Organization for Economic Cooperation and Development (OECD) (http://www.oecd.org). Text of the "OECD Convention on Combating Bribery of Foreign Public Officials in International Business Transactions," links to national implementing legislation, commentary, news, OECD reports, and other publications.
Organization of the Petroleum Exporting Countries (OPEC) (http://www.opec.org/). Provides news, press releases, speeches, documents, and other publications.
Rocky Mountain Mineral Law Foundation (http://www.rmmlf.org). Contains information concerning RMMLF conferences, copies of the RMMLF newsletter, indexes to the RMMLF annual institute Proceedings, and more.
Web sites of major oil companies such as British Petroleum, Exxon, and Shell often provide useful publications and data.