American's for Responsible Recreational Access (ARRA) - http://www.responsiblerecreation.com - the most educational for current affairs including information and sample letters with links to fight back.

AMA - http://www.ama-cycle.org - American Motorcycle Association fighting legal battles everyday for our right to ride

Blue Ribbon Coalition - http://www.sharetrails.org - oppose legislative threats and build support for progressive legislation aimed at improving access opportunities for all.

Recreation.Gov - http://www.recreation.gov/ - Nationwide listing of recreation including off-road access areas in the U.S.

US Senate - http://www.senate.gov/ - Click on the "Senator" button first then choose your state to email your senator

Bereau Of Land Management - http://www.blm.gov/nhp/

USDA Forest Service - http://www.fs.fed.us/recreation/