Emmett Grogan (born Eugene Grogan, November 28, 1942 – April 6, 1978) was a founder of the Diggers, a radical community-action group of Improvisational actors in the Haight-Ashbury district of San Francisco, California.
- It's a game. A game played on the streets of New York, for as long as anyone can remember. It is called Ringolevio, and the rules are simple. There are two sides, each with the same number of players. There are no time limits, no intermissions, no substitutes and no weapons allowed. There are two jails. There is one objective.
- Grogan, Emmett. Ringolevio. Retrieved on September 20, 2010.