This monograph presents brief descriptions of 28 of these cases. Most are drawn from experiences where citywide data intermediaries or universities worked with individual community groups to accomplish some practical purpose. The intermediaries include the partners in the National Neighborhood Indicators Project, a rich program of activity under way in Milwaukee, and individual cases from Camden, New Jersey; Indianapolis; and New York City. Earlier versions of this monograph, with smaller numbers of cases, were published in 1996 and 1997. This current version contains a richer array.