Includes: Comptometer advertisements and logo, oiling the Comptometer instructions, and a letter on the Felt & Tarrant Mfg. Co. letterhead.

Includes: 6 photographers a collector has taken of their vintage Fitch typewriters with an accompanying letter.

Includes: company letters to dealers on Fox letterheads and illustrations, a postcard with a drawing of a office machine supplies building in Boston that sold Fox Visible typewriters, a postcard with a black and white photo of a man using a Fox typewriter with a taxidermy fox on the desk, a postcard with an illustration of a woman using a Fox typewriter, tear sheets with ads for Fox typewriters and a pamphlet for Fox typewriters with diagrams.

Includes: a letter on letterhead illustration of a Franklin typewriter, a Franklin typewriter advertisement with illustration, envelopes with illustrations of Franklin typewriters, and a newspaper clipping with a photograph of a Franklin #7 typewriter.

Includes: Hall Typewriters advertisement with illustration and a trade card.

Includes: an invoice and letters on Hammond Typewriter Company letterhead and illustrations, envelopes with varying Hammond typewriter company logos and depictions of Hammond typewriters, John Pratt the inventor of the Hammond typewriter postcard photograph, Hammond exhibition booth and factory in New York City postcards, Hammond logo and illustrations stamps, Hammond typewriters models 2 and 12 photocopied user manual, Hammond typewriters trade cards, Multiplex Hammond and all models of Hammond typewriters user manuals, standard and portable Hammond price list, "Little Journeys to Homes of Gret Scientists" booklet, "Tyndall" with an advertisement for a Hammond typewriter in the front matter, Hammond typewriter order form , a keyboard diagram, Hammond typewriter trade catalog, Multiplex trade catalog, Hammond typewriter supplies pamphlet, instructions for adjusting the Multiplex Hammond, stencil work on a Hammond multiplex instructions, making copies on a Hammond typewriter instructions, and a business card.

Includes: Harris Lanier Viewwriter.

Includes: Imperial company logo and illustrations.

Includes: instruction booklet on how to unpack a Lettera 32, a spare parts manual for Linea88 models, trade catalogs for typewriter models Diaspron 82, Lettera 22, Lettera 32 and an Olivetti brand personal computer model ETV350, a Lettera 32 trade card with parts diagram, Olivetti Graphika trade catalog, a letter from a dealer to a school teacher about the Olivetti Graphika, envelopes with Olivetti logo and illustrations, a postcard with an Olivetti typewriter, envelopes with Olivetti logo, one of the envelopes has Nazi iconography, Olivetti public relations coordinator business card, and models ET351 and ET231 business reply cards.

Includes: customer engineering department with information about mechanical and electric part changes and upgrades with diagrams.

Includes: IBM exhibit postcards, IBM factory in Endicott, New York postcards, a company envelope, an IBM Elliot Noyes typewriter envelopes, a newspaper article with an image of an IBM Elliot Noyes typewriter, a letter on IBM United Kingdom LTD. letterhead, and ribbon holder cards for the Selectric ii typewriter.

Includes: IBM Personal Writing System and IBM Quietwriter Printer Model 2 advertisements, Selectric iii typewriters photocopied manual, Model D typewriter operating manual, typewriter supplies order sheet, IBM customer notice about maintenance prices, and trade catalogs for IBM typewriter models Selectric ii, Wheelwriter 15, Wheelwriter 25, Wheelwriter 35 Wheelwriter 50, Wheelwriter 70, Wheelwriter series ii, and an IBM executary magnetic dictation system.

Includes: illustrations and diagrams.

Includes: photographs and tablature examples, an operating manual, price lists for parts and accessories, receipts for typewriter rentals and parts, company letters to customers and an example of the music tablature the typewriter produced.

Includes: Kroy 190 Lettering System and a letter from an office supplies dealer sending the trade catalog to an interested customer.

Includes: booklets in English and German detailing the history of the Lambert Typewriter company and inventor Frank Lambert, and a chronological list of Frank Lambert's patents.