This guide - provided free by the Public Conversations Project out of Boston, MA, with support from the JAMS Foundation - is their definitive guide to conducting successful dialogues on divisive issues. According to their website: "This publication will take even a first-time practitioner step-by-step through the process while providing experienced facilitators enlightening new insights." 183 pages. By Laura Chasin & Maggie Herzig.
The Public Conversations Project Model is currently being used in Minnesota as part of the Minnesota Council of Churches' Respectful Conversations Project (sponsored by the Bush Foundation). For more info on that project: