The records document the work of consulting engineers and bridge builders, Ralph Modjeski (1861-1940) and Frank Masters (1883-1974) of Harrisburg, Pennsylvania.

Consists chiefly of Cady's research notebooks on various subjects in physics and a considerable technical reprint file; some records of Cady's consultant work and patents granted.

The Frank K. M. Rehn Galleries records measure 21.8 linear feet and are dated 1858-1969 (bulk 1919-1968). The records consist mainly of business correspondence with collectors, artists, museums and arts organizations, colleagues, and others. A small amount of Frank K. M. Rehns personal correspondence and a few stray personal papers of individual artists are interfiled. Also included are financial records, scrapbooks, printed matter, miscellaneous records, and photographs documenting most of the history of a highly regarded New York City art gallery devoted to American painting.

This record unit consists of master audiotapes for "Radio Smithsonian" programs 750-1098, 1984-1989; elements, or original, unedited tapes for "Radio Smithsonian" programs 837-1098, 1985-1989; audio elements for the television series "Here at the Smithsonian," volumes 3-8, 1984-1989; master audiotapes for "Folk Masters" radio series, 1991; scr...

The records of the Carnegie Institute, Museum of Art measure 265.8 linear feet and date from 1883-1962, with the bulk of the material dating from 1885-1940. The collection includes extensive correspondence between the museum's founding director, John Beatty, and his successor, Homer Saint-Gaudens, with artists, dealers, galleries, collectors, museum directors, representatives abroad, shipping and insurance agents, and museum trustees. The collection also includes Department of Fine Arts interoffice memoranda and reports; loan exhibition files; Carnegie International planning, jury, shipping, and sale records; Department of Fine Arts letterpress copy books, and a copy of the original card catalog index to these records.

The papers of architectural historian, author, critic, teacher, and museum director, Henry-Russell Hitchcock, date from 1919-1987 and measure 24.8 linear feet. Almost all of the collection is comprised of Hitchcock's correspondence files relating to academic research, teaching, curatorial interests, and professional associations. Letters are from prominent architectural historians, architects, artists, preservationists, museum directors and curators, and family and friends. Also found are two feet of writings by Hitchcock and others, scattered biographical information, printed material, and photographs of Hitchcock and architecture.

Papers documenting the farming and family life of the Robinson family of Prince George's County and after 1975, Charles County, Maryland. Papers documenting the farming and family of the Via family of Greene County, Virginia, Washington, D.C., Prince George's and Calvert Counties, Maryland, by 1949.

Floyd Levin was a Los Angeles textile manufacturer who turned his passion for jazz into a second career as an influential jazz journalist and historian. The collection consists of research materials including biographical files. In addition, there are numerous photographs that were taken and collected by Levin.

The bulk of the collection is music for the five-string banjo, often with piano and/or second banjo accompaniments. Almost no sheets have cover illustrations. Many editions are British and rarely have copyright dates.

These records document the governance and programmatic activities of the Museum of the American Indian/Heye Foundation (MAI) from its inception in 1904 until its sublimation by the Smithsonian Institution in 1990. The types of materials present in this collection include personal and institutional correspondence, individual subject files, minutes and annual reports, financial ledgers, legal records, expedition field notes, research notes, catalog and object lists, publications, clippings, flyers, maps, photographs, negatives and audio-visual materials. These materials span a varied range of subjects relating to the activities of the museum which are more fully described on the series level.