Naval architect and engineer. Correspondence, memoranda, diaries, notebooks, subject files, reports, articles, blueprints, charts, graphs, specification sheets, photographs, newspaper clippings, and other printed material pertaining primarily to Brown's career as a naval architect and marine engineer.

Naval architect. Correspondence, blueprints, newspaper clippings, and photographs relating to the restoration of the Constitution (frigate) and the Constellation (frigate).

Engineer and inventor. Correspondence, writings, design specifications, articles, memoranda, technical notes, financial and legal papers, drawings, printed matter, and miscellany relating primarily to Ericsson's activities in marine engineering, especially his work on screw propellers and his design of the steamship Princeton and the ironclad Monitor. Includes correspondence of Ericsson's biographer, William C. Church.

Naval officer and United States representative from Alabama. Correspondence, memoranda, speeches, lectures, articles, reports, notes, analyses, naval orders, press clippings, photographs, and other papers relating chiefly to Hobson's naval career and to his efforts on behalf of prohibition, restrictions on international drug trafficking, and opposition to the Franklin D. Roosevelt administration.

Naval officers, father and son. Biographical data, commissions, orders to duty, and miscellaneous material relating to the naval careers of Edward Nealy Kellogg and his son, Edward Stanley Kellogg.

Naval officer. Correspondence, subject file, and miscellaneous material relating to Sicard’s naval career, including diagrams and memoranda for breech-loading howitzers and his plans for steel armor plate for ships.