In July 1964, President Johnson ordered a review of the risk of another Cuban Missile Crisis happening and for an outline of the alternative courses of action that would be available.
Date: December 11, 1964
Author: Interdepartmental Committee
Title: NSAM 311: Review of the Problem of Assurance Against any Missile Crisis in Cuba
Archival Source: "NSAM 311-Review of the Problem of Assurance Against Any Missile Crisis in Cuba" folder, Box 5, National Security File: NSAM, Lyndon B. Johnson Library
Johnson's original request for this study was conveyed in McGeorge Bundy to SecState, SecDef, DCI, "NSAM 311: Review of the Problem of Assurance Against Any Missile Crisis in Cuba," 10 July 1964.
This report constitutes only part of the interdepartmental committee's findings. Other related documents are pending declassification review.