Bike League is based out of DC and a first class resource for nearly all things bike related in the area. The below is a "find it" link.....If still need more direction, I've found the Board Directors have been helpful too ( their email addresses are available from their profiles)

http://www.bikeleague.org/cogs/resources/findit/How to Contact Us
The League of American Bicyclists is headquartered in Washington, D.C.

League of American Bicyclists
1612 K Street NW, Suite 800
Washington, DC 20006-2850

Phone: (202) 822-1333
Fax: (202) 822-1334
Email: bikeleague@bikeleague.org

If you care about bicycling, become a League member today.

Are you looking for the staff or board information. Go to the About Us section.