I spent several days in September 2015 at the Rockefeller Archive Center (RAC) working in the Nelson A. Rockefeller Papers, especially the gubernatorial collection, investigating the Hudson River Valley Commission (HRVC), a largely unstudied state agency that the governor created in 1965. Thanks to considerable effort by archivist Monica Blank after my initial interview at RAC, I also worked in the documents Laurance S. Rockefeller compiled as chair of the (temporary) Hudson River Valley Commission, which are housed at the RAC. Given his longstanding interest in the Hudson River Valley, Laurance S. Rockefeller's papers include a large amount of material from the subsequent years of the "permanent" commission's existence. During the same month of my visit to RAC, I also spent considerable time working in the Hudson River Valley Commission Collection at the New York State Archives, Albany. Between these two collections, I was able to develop a thorough understanding of the commission's goals and operations.