Progress Evaluation Meeting in the Matter of Pollution of the Interstate Waters of the Potomac River and Its Tributaries--(Washington Metropolitan Area)--District of Columbia-Maryland-Virginia (1969 : Washington, D.C)
Conference in the Matter of Pollution of the Interstate Waters of the Lower Savannah River and Its Estuaries, Tributaries, and Connecting Waters--Georgia--South Carolina (2nd session : 1969 : Savannah)
Conference in the Matter of Pollution of the Navigable Waters of Dade County, Florida, and Tributaries, Embayments and Coastal Waters (3rd : 1971 : Miami, Fla.)