Russell Public Communications, an award-winning public relations and public affairs firm based in Tucson, marked its 20th anniversary this week and renewed its pledge to the Sahuaro Cougar Foundation to support college scholarships for graduating Sahuaro High School students. The firm launched the Russell Public Scholarship in 2012 and has since awarded $10,000 to college-bound Cougars. The renewed pledge announced today commits an additional $10,000 for future scholarships.