Two 3M scientists and a bookmark.

Post-it began as an adhesive that did not do what it was meant to do. According to the National Inventors Hall of Fame, Spencer Silver was a senior scientist developing new classes of adhesives at 3M in 1968 when he found an acrylic adhesive made of tiny spheres, one with a high level of tack but a low degree of adhesion. On the Post-it brand’s own history timeline, Silver recalls that 3M wanted to develop “bigger, stronger, tougher adhesives,” and that “this was none of those.” The brand describes his discovery as microspheres that keep their stickiness but have a “removability characteristic,” so that surfaces can be peeled apart.

For several years the adhesive had no obvious use. The Hall of Fame says Silver shared it with colleagues over the next five years, informally and in seminar presentations, and the brand’s timeline quotes him saying he came to be known as “Mr. Persistent” because he would not give up.

The use arrived from a church choir. Art Fry, a product-development scientist at 3M, attended one of Silver’s seminars. In 1974, the Hall of Fame says, Fry grew frustrated that the paper bookmarks he used to mark songs in his hymnal kept falling out. The brand’s timeline places the problem at his Wednesday-night choir practice: by Sunday, the scraps had fallen out of the book. Fry reasoned that a single, evenly spaced layer of Silver’s microspheres might hold a bookmark without damaging the page, and he made samples.

The bookmark turned into something else. The Hall of Fame says Fry used the samples to exchange notes with his supervisor, and that the two came to see they could serve as self-attaching notes and labels. The brand’s timeline quotes Fry: “What we have here isn’t just a bookmark. It’s a whole new way to communicate.”

From Press ’n Peel to the Boise Blitz.

Getting from samples to a product took years. The Hall of Fame describes the hard parts as building the equipment and processes to manufacture the notes and getting the adhesive to stay in place with a consistent range of adhesion. Inside the company, the brand’s timeline says, Fry made 3M’s corporate headquarters his proving ground, supplying staff with the new notes.

The first public test was not called Post-it. In 1977, the Hall of Fame says, the notes were released in four cities under the name “Press ’n Peel.” The brand’s own timeline describes the results as mixed. 3M’s marketers then decided to put the product directly into people’s hands, in a sampling campaign the brand calls the Boise Blitz, after its launch in Boise, Idaho.

A new name came with the new campaign. According to the Hall of Fame, a “massive marketing effort and a rebranding campaign” produced the Post-it Note name, and the product was introduced throughout the United States on 6 April 1980. The brand’s timeline then records the notes being introduced in Canada and Europe.

The colour that became the brand’s signature was, by 3M’s own account, an accident of supply. The Post-it timeline says the notes’ “now iconic Canary Yellow color was chosen by happenstance — a lab next door only had scrap yellow paper on hand.” Silver, in the same timeline, described the notes as self-advertising: people stuck them on documents they sent to others, and the recipients, curious, peeled them off and went out to buy a pad of their own.

Recognition inside 3M followed. The brand’s timeline says Fry was given the company’s top technical title, corporate researcher, and the Hall of Fame says he was admitted to 3M’s Carlton Society in 1983. In 2010 the National Inventors Hall of Fame inducted both Fry and Silver for Post-it Notes; its pages list Fry under U.S. Patent No. 5,194,299 and Silver under U.S. Patent No. 3,691,140.

Design and documentation.

The brands in this group are everyday office and writing names: the pens, pencils, markers, paper goods and desk tools that sit in drawers, pencil cases and stationery aisles. Office and writing brands in general sit at many different points in the trade, from family firms that still carry a founder’s name to labels that now belong to much larger stationery or consumer-goods groups, and a single brand can be sold everywhere from a corner shop to an art supply store or a corporate supply catalogue.

An office or writing brand’s identity is usually carried less by a single product than by a name, a familiar barrel, cap or colour and a logo printed small on the side, because the company behind the name may have changed hands, moved its production or grown far beyond the place where it started. That makes the questions behind each name worth asking plainly: who started it, who owns it now, and where its products are actually made.

Each guide separates what independent sources record from what the company says about itself — its founding story, its owners over time, where its products are made and how its marks have changed — and marks plainly what rests only on the company’s own word.

A 3M brand from the start.

Post-it has always belonged to 3M. The company’s own history page says it was founded in 1902 in Two Harbors, Minnesota, as the Minnesota Mining and Manufacturing Company, by five founders who set out to mine corundum for sandpaper and grinding wheels. Its headquarters moved to St. Paul, and in 1962, 3M says, the first office building was completed at the 3M Center in Maplewood, Minnesota, which remains its global headquarters. The same history page lists 1980 as the year 3M introduced Post-it Notes.

The brand grew from a single note into a range. The Post-it timeline lists Post-it Flags, introduced for colour coding, filing and indexing, followed by Easel Pads for meeting rooms, Super Sticky Notes with a stronger adhesive for vertical and uneven surfaces, and the Big Pad. The brand’s product menu now also groups dispensers, tabs, page markers, recycled notes, dry-erase surfaces and digital apps under the Post-it name, alongside a paper-goods line called Noted by Post-it.

The notes also became a piece of popular culture, and the brand keeps track of it. Its timeline notes that the main characters of the 1997 film Romy and Michele’s High School Reunion claim to have invented Post-it Notes, and that in an episode of Sex and the City Carrie is broken up with by Post-it Note.

The name itself is written with a capital P and a hyphen, and 3M uses it with a registered-trademark mark as “Post-it® Brand” on its own pages.

For a design guide, Post-it shows how a product can carry its identity in its own colour and format: a square in the shade 3M’s own timeline calls “now iconic Canary Yellow.” Compare its 3M sibling in our Scotch brand guidelines and an office classic from another American house in our Sharpie brand guidelines. For this guide we use canary yellow, graphite and office white with a sans, an unofficial interpretation; no product or logo is reproduced.

Keep Post-it’s identity on hand — save it to a board in the Made Good inspiration library.