FWIW — I came across this list from 2012 CFC on the FedBikes web site. I contribute to a few of these.
Rails-to-Trails Conservancy
League of American Bicyclists
Bikes Not Bombs, Inc.
Bikes for the World, Inc.
Bikes Belong Foundation.
Washington Area Bicyclist Association
Mountain Bicycling Association, International
Adventure Cycling Association
USA Cycling, Inc.
.
