The American Association of Professional Landmen provides advocacy, standards, and education to advance the landmen profession.

800 Fournier Street
Fort Worth, TX 76102-3597
Tel: (817) 847-7700
Fax: (817) 847-7704
Email: aapl@landman.org
https://www.landman.org

The American Petroleum Institute is a trade association that represents all aspects of America's oil and natural gas industry.

200 Massachusetts Avenue NW, Suite 1100
Washington, D.C. 20001-5571
Tel: (202) 682-8000
https://www.api.org

The Northeast Gas Association provides education, training, and research and development of natural gas in the Northeast United States.

75 Second Avenue, Suite 510
Needham, MA 02494-2859
Tel: (781) 455-6800
Fax: (781) 455-6828
https://www.northeastgas.org

The Northeast Sustainable Energy Association promotes sustainable energy practices in the built environment.

20 Federal Street, Suite 8
Greenfield, MA 01301
Tel: (413) 774-6051
http://nesea.org