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A collection of over 1,300 nineteenth-century maps published for use by tourists and cyclists. Approximately seventy-five percent of the maps depict Italian provinces, but Great Britain and other European countries (especially Switzerland and Germany) are also represented. There are a few maps of non-European countries as well. Most of the maps are mounted on linen and many are folded into cardboard cases as issued. The collection also includes a few guidebooks (published in a set with separate maps) and post card views

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

This is a miscellaneous collection of maps transferred from the Geology Department. Some are old and rare, some are modern facsimiles. Gifts, purchases, and relevant maps from other special collections were added over time. Maps are arranged geographically. The library has a card catalog listing the maps individually, alphabetized by geographical/political entitity depicted; i.e., maps of Paris are filed under P, maps of France under F, and maps of Europe under E.

Part of the collection consists of correspondence, manuscripts, notes, military diaries, maps and printed materials that pertain to World War I. Some materials deal with the Civil War, Polish history, medieval Russia and Lithuania, and the history of Russian education. Several folders contain military orders, "prikazy", dating from the early 1900s to about 1925. There are also genealogical materials concerning Russian nobility and Goshtovt's family. The maps primarily concern World War I and the Civil War; also included are a postal map of Russia in 1860, and a map of transportation routes in 1887. The printed materials include clippings, and bulletins published by various emigre military organizations. Most of the books in the collection pertain to the German army during World War I.

This collections contains the professional research, writing, publications, and correspondence produced and collected by Rattner through her study of the architect James Renwick, Jr. The bulk of Rattner's research addresses the life and works of Renwick, but other research topics represented in her papers range from the Renwick family genealogy to the institutional architecture of New York City. Types of research material include personal research notes (in notecard format, both typed and holograph), correspondence (1963-2001), newspaper and magazine clippings, Xerox copies of archival material and secondary sources, transcribed articles and correspondence, brochures from historic sites, photographs and slides of buildings and sites, sketches, historic structure inventory forms, landmark nomination forms, landmark designation reports, and postcards.