Condition, Change, and Complexity: The Media of Albert Pinkham RyderAmerican Institute for Conservation28–35
Erhardt, W. David, von Endt, David W., and Tsang, Jia-sun. 1990. "Condition, Change, and Complexity: The Media of Albert Pinkham Ryder." In Postprints of the Paintings Group. 28–35. Washington, DC: American Institute for Conservation.