Ostrower, Francie, 2011. Foundation Sunset: A Decision-Making Guide. Washington, DC: Aspen Institute. This research-based guide offers a framework that can help donors and trustees craft a sunsetting plan that is consistent with their particular values, circumstances, and motivations. It does so by identifying overarching areas of decisions for donors and trustees to address, and discussing options within them. This guide proposes that a strong sunsetting plan will be one in which donors and trustees clarify their thinking on each of these elements, and in which the different elements of the plan are consistent with one another and the foundation’s fundamental rationale for sunsetting.