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Records of the North American Committee to Aid Spanish Democracy and Medical Bureau to Aid Spanish Democracy, two New York City-based American organizations working to raise funds and provide medical and humanitarian aid for the Republican cause in the Spanish Civil War (1936-1939), and to refugees who fled Spain after the defeat of the Republican forces in April 1939. The organizations formally merged in January 1938 and became known as the Spanish Refugee Relief Campaign. These files include the organization's official reports, correspondence, pamphlets, broadsides, photographs, and publicity material, as well as several scrapbooks of news clippings.

Correspondence, adminiatrative files, reports, memoranda, etc.

Correspondence of Price with contemporary political figures including Theodore Roosevelt, Henry L. Stimson, Benjamin Cardozo, Martin Saxe, and John Purroy Mitchel; records of the Fusion Committee of 1909; and scrapbooks of clippings relating to New York City fusion movements, 1909-1933.

Professional and personal files including Armstrong's correspondence with professional associations, other engineers, and friends, his research notes, circuit diagrams, lectures, articles, legal papers, and other related materials. Of his many inventions and developments, the most important are: 1) the regenerative or feedback circuit, 1912, the first amplified radio reception, 2) the superheterodyne circuit, 1918, the basis of modern radio and radar, 3) superregeneration, 1922, a very simple, high-power receiver now used in emergency mobile service, and 4) frequency modulation - FM, 1933, static-free radio reception of high fidelity. More than half the files concern his many lawsuits, primarily with Radio Corporation of America, over infringement of the Armstrong patents. Litigation continued until 1967. Other files deal with his work in the Marcellus Hartley Research Laboratory at Columbia University, 1913-1935, and with the American Expeditionary Forces in France during World War I, his Air Force contracts for communications development, Army research during World War II, the Radio Club of America, the Institute of Radio Engineers, FM development at his radio station at Alpine, N.J., the use of FM in television, his involvement in Federal Communications Commission hearings and legislation, and his work with the Zenith Radio Corporation. Also, letters to H.J. Round

A small collection of correspondence, awards, and ephemera related to the engineer David B. Steinman. The bulk of the material dates from the first half of the 1950s.

The collected papers of Aaron W. Warner, former Director of the University Seminars, include his writings on domestic and foreign labor, course notes, and documents from his time at the University Seminars.