All back issues of The Ensemble (since 2011), Co-Founded by Eric Booth and Tricia Tunstall for the U.S. and Canadian El Sistema-inspired movement, are available at: http://theensemblenewsletters.com/ensemble-archive/
All material published in The World Ensemble (since 2015), Co-Founded by Eric Booth and Tricia Tunstall, for the worldwide El Sistema-inspired movement is available at: https://theworldensemble.org/