“…Data are assembled from national associational directories, from which there is a strong history of data collection in the U.S. social movement and interest group scholarly research (e.g., Baumgartner & Jones, 1993;Johnson & Frickel, 2011;Minkoff, 1995;Nownes, 2004;Walker et al, 2011), as well as in the United Kingdom (e.g., Jordan, Baumgartner, McCarthy, Bevan, & Greenan, 2012;Tilanus 1986) and Canada (e.g., Abelson & Carberry, 1998;Greenberg & Walters, 2004;Handy, Mook, & Quarter 2008;Quarter, Sousa, Richmond, & Carmichael, 2001). Despite the number of publications drawing from these sources, difficulties in accessing data have previously limited their use to analysis of single organizational populations within single nations (but see .…”