Letters, printed material, photographs, writings, and two etchings.

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

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.

The records of Milch Gallery measure 42.5 linear feet and date from 1911-1995. Edward Milch (1865-1953) opened the Edward Milch Gallery in New York City. In 1916, he formed a partnership with his brother Albert Milch (1881-1951), a gilder and framer, creating E. & A. Milch, Inc., a gallery specializing in American art. Harold C. Milch (1904-1981), Albert's son, was appointed a partner in 1944 and continued the business until his death. Business records of Milch Gallery, 1911-1968, include correspondence, sales records, inventories, financial records, printed matter, photographs, and legal documents. Later additions to the records date from 1922-1995 and include correspondence; artists' files; financial, sales, and stock records; printed material; and photographs.

The papers document Leo H. Baekeland, a Belgian born chemist who invented Velox photographic paper (1893) and Bakelite (1907), an inexpensive, nonflammable, versatile plastic. The papers include student notebooks; private laboratory notebooks and journals; commercial laboratory notes; diaries; patents; technical papers; biographies; newspaper clippings; maps; graphs; blueprints; account books; batch books; formula books; order books; photographs; and correspondence regarding Baekeland, 1887-1943.

George Sidney (1916-2002) was a film director during the Golden Age of Hollywood filmmaking (1927-1954). He spent the longest period of his career at Metro-Goldwyn-Mayer (MGM) until the 1950s. He later produced and directed films for Columbia Pictures and Paramount Pictures. He was a president of the Directors Guild of America and an avid photographer. He was the recipient of three awards from the Academy of Motion Picture Arts and Sciences (Oscar). The collection consists of photographs, photographic negatives, personal and business materials, and film. The collection also contains material created by George Sidney's uncle, George Sidney, vaudevillian and motion picture actor.

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.

Collection documents the business activities of the Sandford Card Company and include the papers of Mary Elizabeth Sandford, founder of the company, and her immediate family.

This accessions consists of the personal correspondence of Charles D. Walcott, his family, and his extended family, as well as genealogical materials, family Bibles, photographs, medals, and other materials related to the Walcott family. The correspondence documents the personal relationships between the immediate Walcott family, as well ...

The papers of portrait painter Carl Bohnen date from 1888-1977, and measure 3.7 linear feet. Found within the papers are biographical materials; correspondence among family, clients, and colleagues; scattered business records; a sketchbook and loose sketches; miscellaneous notes and writings; three scrapbooks of clippings and additional printed materials. Photographs are of Bohnen, family members, colleagues, views of Paris in the late 1920s, Native American models, portrait clients, and artwork.