The Washington State Historical Society (WSHS) presents innovative educational opportunities—including exhibits, programs, publications, and online curricula—that make Washington’s history relevant for today’s audiences. Following a period of reflection and repositioning, which resulted in a new strategic plan, WSHS recognized the need for increased revenue, particularly contributed philanthropic revenue, to achieve its vision of expanded services and programs. In April 2022, WSHS engaged Benefactor Group to conduct a philanthropic capacity assessment and develop a plan for growth. This work included an internal readiness assessment, case development, external discovery, and strategy development. We delivered a three-year growth plan in December 2022 and continued to support WSHS as it began to implement this plan.