Information on the efforts of the Arizona-Sonora Water Task Force as part of the Border 2012: U.S.-Mexico Environmental Program to improve environmental quality in the area along the Arizona Sonora border.

Information on the efforts of the Ambos Nogales Air Task Force as part of the Border 2012: U.S.-Mexico Environmental Program to improve environmental quality in the area along the Arizona Sonora border.

Letter from C. D. Dawson to Carl Hayden urging him to consider the rights of miners and farmers when drawing up the boundaries for the proposed park.