Eric Walker added Donors use charity to push free-market policies in states to a number of topics

Eric Walker added Donors use charity to push free-market policies in states to National Resources Defense Council, and added National Resources Defense Council to 501(c)(3) nonprofits

Eric Walker added a number of topics and 501(c)(3) organization - Wikipedia to 501(c)(3) nonprofits, and added 501(c)(3) nonprofits to United States businesses and organizations and 501(c) organizations