A.R. Moen (1799-1867) was a traveling agent for the Collins & Company, a tool manufacturer. In the letter to the company, Moen discusses and provides a sketch of a new axe he has invented.

Aaron A. Maple (1866-1938) was an asbestos building supplies traveling salesman for the Ohio branch of the Asbestos Shingle, Slate & Sheathing Co. This small collection contains fourteen of Maple's personal diaries from 1920 to 1936 (with some gaps) that document his home life, expenses, work, and travel throughout the northern and northwestern parts of the state.

Bartley Crucible & Refractories, Inc. manufactured graphite crucibles in a plant at 67 Oxford Street in Trenton, New Jersey, a major center for the pottery industry. The company was originally named the Jonathan Bartley Crucible Company and was incorporated on February 24, 1908. This collection consists of the business records of the firm throughout its various name changes and the personal papers of two owners: Lewis H. Lawton (1876-1953), a former master bricklayer, and Walter L. Shearer (1900-1984), a ceramic engineer who had been a consultant to Bartley since 1930. None of the records are complete. The business records and the Shearer papers and ephemera represent selections of much larger bodies of material, while the Lawton papers are an accidentally preserved sample from the plant. Substantive correspondence has been sifted from a large mass of orders, bills, and receipts. A sample of more routine correspondence has been saved to give an accurate picture of each firm's trading relationships. The Shearer materials have been sampled to present a picture of his education, personality, and social life.

Belle M. Sherman (1851-1930) was a New York writer, translator, and editor who edited the women's page of the New York Herald, and wrote for magazines such as Colliers and the old Cosmopolitan under the byline of Mrs. B.M. Sherman or Belle M. Sherman. The collection contains incoming letters, the bulk from her son, Walter Magee Annette (1874-1955), but also her daughter-in-law Jane Nuckols (1878-unknown), and a column reader.

L. Gerard Smith (1871-1940), born Louis W. Schmidt, was a business executive for the Vapor Car Heating Company based in Brooklyn, New York, and the Vapor Car Heating Company of Canada, Limited, in Montreal, Quebec. Smith worked at E.W. Curtis's print shop in New York City until 1886. Between 1893 and 1905, he worked as a mailman in Brooklyn, joining the National Association of Letter Carriers, an affiliate of the Knights of Labor. Smith left the Post Office for a clerical career in 1905. He worked with the Saftey Car Heating and Lighting Company, railroad hardware manufacturers, and 1913 was made general manager of Spindler & Deringer of Jersey City. Smith later became the general manager of the Vapor Car Heating Company, and in 1922 when the company was required to create a separate subsidiary to enter the Canadian market, Smith was named general manager of the Vapor Car Heating Company of Canada, Limited in Montreal, Quebec. These personal papers cover the period between 1893 and 1939 of the life of L. Gerard Smith. The letters are personal and candid, depicting Smith's large extended (and adoptive) family and the methods by which they helped support each other. The letters also provide insight into Smith's professional life, with correspondence between his business connections, particularly those he connected with through the Masons and the YMCA.

Simon Bolivar Camacho (1859-1906) was a traveling sales representative for the American Bank Note Company, a dominant American producer of bank notes, stock and bond certificates and similar commercial paper. The collection includes his diaries between 1892 and 1904, mostly relating to business travels in Latin America, but also containing information on daily events in the New York City area, news of the day, and domestic, personal and religious reflections.

The Zanol Products Company was a door-to-door consumer goods distributor. Founded in Cincinnati, Ohio circa 1908, Zanol developed its own line of household products which the company sold directly to consumers via door-to-door representatives. This collection consists of one salesman's case containing pamphlets, trade cards, trade catalogs, sewing needle cases, books of blank order forms, and other ephemera from the Zanol Products Company.