The role of the policy entrepreneur in the policy process forms an integral part of our understanding of the formulation and implementation of policy in the United States. For all its theoretical importance, however, little work has been done to develop or test the propositions of entrepreneurship offered by Kingdon (1984). By examining the life of Ansel Adams (1902-1984), this paper explores more fully the concept of policy entrepreneurship and seeks to develop a more robust concept that accounts for the long-term, diffuse series of activities that precede Kingdon’s “stream coupling” in the policy process. The analysis suggests that such an approach offers some promise for capturing a broader spectrum of policy activity.