P.M. Forni, "Choosing Civility: The Twenty-Five Rules of Considerate Conduct," New York, St. Martin's Press, 2002 and 2003. $20 for hardcover, $11.95 for softcover. Details are available on Civility Initiative website at John Hopkins University: krieger.jhu.edu/civility/choosingcivility.html
Information on Washington County's civility project, including locations and times, are available here: