The SPIN Project (Strategic Press Information Network) provides media technical assistance to nonprofit public-interest organizations across the nation. It's an excellent resource for organizations that have enough in-house resources to execute a strategic communications plan once it's been established.
The SPIN Project announced the publication of a new resource today called "Words that Work: Messaging for Community Benefits Agreements," which was produced in collaboration with The Partnership for Working Families.
The 36-page toolkit lays out excellent advice on framing and message creation, case studies of successful campaigns, and sample communications documents to help organizations plan their own strategic communications campaign.
The toolkit is available for download here.