In 1882, brothers Charles and Henry Hagan established a carriage, coach, and wagon business in Frederick, Maryland. This collection represents approximately two decades of business transactions through 21 volumes of daybooks and ledgers.

A New York bookseller, Warshaw assembled this collection over nearly fifty years. The Warshaw Collection of Business Americana: Accounting and Bookkeeping forms part of the Warshaw Collection of Business Americana, Subseries 1.1: Subject Categories. The Subject Categories subseries is divided into 470 subject categories based on those created by Mr. Warshaw. These subject categories include topical subjects, types or forms of material, people, organizations, historical events, and other categories. An overview to the entire Warshaw collection is available here: Warshaw Collection of Business Americana

The collection consists of correspondence, invoices, drawings, photographs, and negatives and other printed literature documenting the Baltimore and Ohio Railroad from its inception in 1827 to its merger with the Chesapeake and Ohio Railroad in the 1960s.

This collection consists of postcards gathered by Dr. Victor A. Blenkle, a twentieth century physician. The postcards primarily concern geographical locations and landmarks in the United States and Western Europe, but also include materials from six other continents.

The Thomas Warren Sears Photograph Collection documents examples of the design work of Thomas Warren Sears (1880-1966), a landscape architect and amateur photographer from Brookline, Massachusetts. Sears, who was based for most of his career in Philadelphia, designed a variety of different types of landscapes ranging from private residences, schools, and playgrounds to parks, cemeteries, and urban housing developments located primarily in Pennsylvania, Maryland, and New York. In addition to some of Sears' design work, images in the collection document Sears' domestic and foreign travels, design inspirations, and family. The collection includes over 4,800 black and white negatives and glass lantern slides dated circa 1899 to 1930. While most images show private and public gardens, there are a significant number of unidentified views and views photographed in Europe during two trips he took there in 1906 and 1908. Few images are captioned or dated. In addition, there are over 50 plans and drawings, most notably for Balmuckety in Pikesville, Maryland and Reynolda in Winston-Salem, North Carolina, and 3 monographs by or about Sears.

A New York bookseller, Warshaw assembled this collection over nearly fifty years. Series 2 materials include cinema lobby cards, fire insurance maps, photographs and scrapbooks of liquor and wine labels. An overview to the entire Warshaw collection is available here: Warshaw Collection of Business Americana.

A New York bookseller, Warshaw assembled this collection over nearly fifty years. The Warshaw Collection of Business Americana: Agriculture forms part of the Warshaw Collection of Business Americana, Subseries 1.1: Subject Categories. The Subject Categories subseries is divided into 470 subject categories based on those created by Mr. Warshaw. These subject categories include topical subjects, types or forms of material, people, organizations, historical events, and other categories. An overview to the entire Warshaw collection is available here: Warshaw Collection of Business Americana

The collection is the result of research conducted by Dr. Alixa Naff relating to the study of the early Arab immigrant experience in the United States from about 1880-World War II. The study began with oral history interviews in 1962 and became a major project in 1980 with a grant from the National Endowment for the Humanities. It documents the assimilation of Arabic speaking immigrants in the United States.

Large collection of photographs, picture postcards, printed ephemera, and music related to the brass band movement in the United States: includes 8 ambrotypes, 36 tintypes, 59 stereographs, 66 cabinet prints, 90 cartes-de-visite, 150 large photoprints, and 874 picture postcards; also posters, concert programs, instrument manufacturers' advertisemem...

This collection includes information about Samuel P. Langley and his colleagues, as well as documentation of Langley's work. The collection includes biographies of Langley and his assistant Charles Manly, newspaper clippings, correspondence, manuscripts regarding Langley's aircraft, photographs and drawings, work requisitions for the Aerodromes, a sketchbook, specifications and measurements for Langley's experiments, the Langley Memoirs on Mechanical Flight and the Langley "Waste Books."