"There wasn't a minute when the play spirit even took a rest. It romped in at the Thursday night session when President Frederick Greely, of the playground of Chicago, introduced 'our playmates,' Miss Jane Addams, Joseph Lee, and Dr. Luther H. Gulick. And it romped boisterously out late on Saturday afternoon when a whole field of 5,000 delegates, spectators, and festival participants played tag with a thunderstorm . . . The play spirit captivated everyone." -Graham Romeyn Taylor
“How They Played at Chicago.” Proceedings of the First Annual Playground and Play Congress Yearbook. New York: Playground Association of America, 1907.