The collection documents in photographs, scrapbooks, notebooks, correspondence, stock ledgers, annual reports, and financial records, the evolution of the telegraph, the development of the Western Union Telegraph Company, and the beginning of the communications revolution. The collection materials describe both the history of the company and of the telegraph industry in general, particularly its importance to the development of the technology in the nineteenth and twentieth centuries. The collection is useful for researchers interested in the development of technology, economic history, and the impact of technology on American social and cultural life.

A New York bookseller, Warshaw assembled this collection over nearly fifty years. The Warshaw Collection of Business Americana: Cookbooks 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

This collection is made up of materials collected by Dr. Oscar W. Richards on various topics related to microscopes.

Archival materials documenting Danko's career as an inventor of computer components, including writings and publications, biographical material, patent files, papers pertaining to employment, photographs, and miscellaneous.

Collection consists primarily of educational, promotional and publicity materials created by Charles Atlas and others for his bodybuilding business.

Includes records of the Salem China Company relating to the administration of the company, its sales and art department, and other material relating to plant operations prior to 1960, when the company ceased manufacturing and became a distributor only. Includes photographs of various promotions, Salem China patterns, factory buildings, sales staff, show rooms, etc. as well as extensive advertising material of the Salem China Co. and its competitors. Another series contains blueprints and drawings of the Salem China Company's plant and equipment. Another series contains bulletins issued by the Associated Industries of Cleveland from 1977 to 1981.

The W. Atlee Burpee & Company records, dated circa 1873-1986, document the firm's business activities developing plant varieties and marketing and selling seeds. They include accounting records, seed trial records, seed contracts, sales records, inventories, office correspondence, seed catalogs, promotional and instructional materials, advertisements and advertising reports, contest letters, daybooks, photographs, reference materials, and other items relating to the company and some of its competitors.

The papers of woodturner Bob Stocksdale and fiber artist Kay Sekimachi measure 19.5 linear feet and 0.125 GB and date from circa 1900 to 2015. Found are biographical materials, correspondence, writings, professional files, exhibition files, project files, personal business records, printed and digital material, scrapbooks, photographic material, and artwork. Of note are records from Sekimachi's forced internment during World War II at Tanforan Assembly Center and Topaz War Relocation Center from 1942 to 1944.

The collection documents Howard F. Bowker, a coin collector and expert in the coinage of East Asia.

The papers of painter, teacher, and writer Hans Hofmann measure 29.92 linear feet and 5.00 GB and date from circa 1904 to 2011, with the bulk of the materials dating from 1945 to 2000. The majority of the papers were created after 1932 and document Hofmann's life and professional career after settling in the United States. Among his papers are personal and professional correspondence; records of his schools in Munich, New York City, and Provincetown, Mass.; writings and notes; financial records; photographs; printed matter; estate records; and a small number of personal papers of his second wife, Renate Schmitz Hofmann. Hofmann's personal papers are augmented by a large selection of printed matter, including exhibition catalogs, articles, news clippings, and monographs about Hofmann and modern art, as well as documentary projects including Tina Dickey's compilation of oral histories and records of Hofmann's students, and research materials, sound and video recordings, digital material, and motion picture film created and gathered by Madeline Amgott during the production of two video documentaries about Hans Hofmann released in 1999 and 2002. Hofmann's Library was acquired with his papers; inscribed/annotated volumes have been retained with the collection.