World's Fairs or International Expositions are large-scale exhibitions that highlight technology, agriculture and other innovations of national or cultural significance. The New York World's Fair took place in Flushing Meadows, Queens from April 30, 1939 to October 31, 1940. The theme was "The World of Tomorrow." This item is the sheet music for the official song of the 1939/1940 New York's World's Fair.

J. Marsh Music, Fancy and Variety store was located on 117 Market Street in Wilmington, Delaware during the 1850s. The store sold, repaired and tuned instruments, as well as selling sheet music. This sheet music cover contains a black and white lithograph of the J. Marsh Wilmington, Delaware storefront, with people on the side walk, also showing musical instruments in the windows.

The Roland A. Lynn papers are composed of schematics and electronic instrumental scores related to Lynn’s contributions in developing the Mark II musical synthesizer at RCA Laboratories from 1955 to 1959.

Sixteen of Lynn's lab notebooks (1951-1958) can be found in Record group 26.

Therese Olmsted (1931-2021) worked for Avon Products, Inc. as a sales representative, later becoming a district manager. Avon Products, Inc. is a manufacturer and direct selling company of beauty products. It is one of the oldest direct selling companies in the United States. This small collection consists of instructional audio recordings about Avon cosmetics and recordings of Avon-sponsored holiday music (e.g., birthday, Christmas, New Year's, sales meetings). The Avon cosmetics instructional audio recordings are part of a set called "Avon Beauty Course." This collection contains parts 4 through 7, covering the following topics: Makeup, Bathing & Grooming, Fragrance, and Family Needs. The holiday music consists of popular and classic music performed by symphony orchestras or by popular musicians of the day, such as Peggy Lee and Elvis Presley.

World's Fairs or International Expositions are large-scale exhibitions that highlight technology, agriculture and other innovations of national or cultural significance. World's Columbian Exposition, the Chicago World's Fair which was staged from May to October, 1893, commemorated 400 years since Columbus's New World arrival. This item is a book containing a collection of thirty-nine marching songs written as instrumentals for the piano.