Our Only World A selection of photographs from "Our Only World," a 1973 exhibit by the Smithsonian Institution of 113 Documerica images that toured the country calling attention to the nation's environmental crises and efforts made to reverse it.

	Danny Lyon photographed architecture and Chicano youth in urban environments in El Paso, New York City and Chicago.		Images of automobiles and their impact on culture, economy, land use and air quality.
	LeRoy Woodson photographed air pollution, victims of black lung, and citizens' efforts to improve local air quality.		Images of strip mining, efforts against it, environmental impact and land reclamation projects in Ohio, Illinois and Montana.