My picks: Try the Debs-Jones-Douglass Institute, the educational arm of the Labor Party. www.djdinstitute.org. Labor Party at www.thelaborparty.org
Or, if you favor radical feminism, Redstockings of the Women's Liberation movement is a 501(c)3. www.redstockings.org or P.O. Box 744 Stuyvesant Sta., NYC, 10014. Grassroots women's liberation thinktank & archive, incorporated in '73 by members of the original '60s group.
And, for balance, a group I'm not involved in, the National Lawyers Guild, www.nlg.org--we're gonna need 'em. Dunno if it's (c)3 or not.
Jenny Brown