United States. Environmental Protection Agency. National Field Investigations Center.

• Report on an investigation of pesticide pollution in the Lower Colorado River Basin, 1973
• Report on effects of waste discharges on water quality of the South Platte River, Denver metropolitan area
• Report on water quality and waste source investigations, Missouri River and Kansas River, Kansas City, Kansas
• Report on water quality and waste-source investigations, Big Sioux River and selected tributaries
• Report on water quality investigations in the South Platte River Basin, Colorado
• Report on water-quality and waste-source investigations, Missouri River and Papillion Creek, Omaha, Nebraska