prepared under the direction of C.G. Paulsen, Chief Hydraulic Engineer ; prepared in cooperation with the states of Arkansas, Louisiana, Oklahoma, and Texas, and other agencies
prepared under the direction of Philip E. LaMoreaux ; prepared in cooperation with the States of Iowa, Kansas, Minnesota, Nebraska, North Dakota, and Wisconsin, and with other agencies
prepared under the direction of Philip E. LaMoreaux ; prepared in cooperation with the states of Connecticut, Delaware, Indiana, Massachusetts, Michigan, New Jersey, New York, Ohio, Pennsylvania, and Rhode Island, and with other agencies
prepared under the direction of O.M. Hackett ; prepared in cooperation with the states of Alabama, Florida, Georgia, Kentucky, Maryland, Mississippi, North Carolina, South Carolina, Tennessee, Virginia, and West Virginia, and with other agencies
prepared under the direction of O.M. Hackett ; prepared in cooperation with the states of Alaska, Colorado, Idaho, Montana, Oregon, Utah, Washington, and Wyoming, and with other agencies
prepared under the direction of O.M. Hackett ; prepared in cooperation with the states of Arizona, California, Hawaii, Nevada, and New Mexico, and with other agencies
prepared under the direction of O. Milton Hackett ; prepared in cooperation with the states of Iowa, Kansas, Minnesota, Nebraska, North Dakota, South Dakota, and Wisconsin, and with other agencies
prepared under the direction of O.M. Hackett ; prepared in cooperation with the states of Alabama, Florida, Georgia, Kentucky, Maryland, Mississippi, North Carolina, South Carolina, Tennessee, Virginia, and West Virginia, and with other agencies
prepared under the direction of C.L. McGuinness ; prepared in cooperation with the states of Arkansas, Louisiana, Oklahoma, and Texas, and with other agencies