Dr. Lynton K. Caldwell, Professor Emeritus at Indiana University; Bloomington, Indiana, was one of the primary thinkers involved in writing the National Environmental Policy Act of 1969 (NEPA). He worked closely with the staff of the late Senator Henry Jackson (D, WA); Senator Jackson, together with the late Senator Edmund Muskie (D, ME), was a major leader in moving NEPA through the Congress to the desk of the late President Richard Nixon (R). President Nixon signed the bill into law on January 1, 1970.