National Defense and the San Diego Dredging Program Booklet detailes various San Diego Harbor dredging projects approved by the US Army Engineers. Hearings regarding these projects were held before the House Rivers and Harbors Committee on February 17, 1937. San Diego Chamber of Commerce produced the document which was distributed to all members of Congress in an effort to win support for the projects. Contains descriptions of the proposed work, photos of the proposed locations and cost/benefit estimates.