Members of the international evaluation field were saddened to learn of the passing of John Mayne, a Canadian leader known for his open and thoughtful approach, as Patricia Rogers of Better Evaluation has underscored, to continuously improving evaluation theory and practice. In an excellent overview of John’s work, Dr. Rogers highlights his legacy in three key areas: contribution analysis, theory of change and the commissioning of evaluations. To access the full article, go to: John Mayne