Joel Orent to Eliot Porter. February 17, 1972.

Congressional Record Proceedings and Debates of the 92nd Congress, Vol. 117, No. 74. May 19, 1971.

Peter Nabakov to Laura Gilpin. March 12, 1979.

The Enduring Navaho draft. n.d.

Notes on Desert Draft. n.d.

Photocopy of Chapter II, "The Cristobal Carrier." n.d.

First Draft of "Retrospective: Eliot Porter," Pages 137 to 167. n.d.

Journal II List and pages 44 to 481. n.d.

"Landscape and Culture." n.d.

Dick Davies, Vice President Marketing, Meisel Photochrome Corporation, Dallas, Texas, to Eliot Porter. March 28, 1977.

Draft of "Epilogue - The Grand Canyon Today." n.d.

Manuscript. n.d.

Draft of "Epilogue - The Grand Canyon Today." n.d.

"To Protect Our Natural Environment." n.d.

Draft of Chapter VIII, "Volcan Alcedo." n.d.

Part II draft text. n.d.

Draft of "Epilogue - The Grand Canyon Today." n.d.

Draft 1 Continued, Pages 41a to 41h. n.d.

"The Great Crow Blackbird." n.d.

Second Draft of "Porter Retrospective: Chapter Five." February 11, 1987.