Hovland Consulting completed a retrospective analysis of the William and Flora Hewlett Foundation’s 2013-2018 Western Conservation grantmaking program. More than 220 people provided input from the late fall of 2017 through the spring of 2018 via a detailed online grantee survey, conference calls, and in-person convenings about individual campaigns, one-on-one interviews, and detailed outcome tracking, all of which was complemented by research. This report is a summary of the full 68-page analysis, and includes recommended best practices for advocates and philanthropy.