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U.S. National Archives: Milk Wort and Butterfly in the Texas Countryside, near San Antonio, 06/1973
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U.S. National Archives: Children in Fort Smith Are Learning That Protecting the Environment Will Take More Than Awareness ..., 06/1972
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U.S. National Archives: Chattahoochee River, Atlanta 05/1972
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U.S. National Archives: Lizard, 05/1972
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U.S. National Archives: Corn and Pumpkins on Farmland Near the Cuyahoga River...09/1975.
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U.S. National Archives: Meadow, 05/1972.