When book sales became part of the story
By 1889, a Kansas newspaper was using “bestseller” to describe a popular book. The word did more than label a title after readers had chosen it: it made popularity itself a selling point. A prospective buyer could be told not only what a book was about, but that other people were already buying it.
Popularity becomes its own pitch
That message works through social proof—the tendency to treat other people’s choices as evidence that something is worth trying. For a book buyer facing shelves of unfamiliar titles, a claim of strong sales offered a quick shortcut. It suggested that the book had found an audience, even if the buyer knew little about its author or subject.
Calling a book a bestseller also turned sales into a public measure of success. Once buying activity could be summarized in a catchy label, publishers and sellers had a phrase they could use to attract still more attention. The label could help sustain the very interest it reported: readers hear that a book is popular, buy it, and add to its popularity.
The 1889 appearance shows that this feedback loop was already recognizable in the language of the book trade. Sales were not merely a result to count; they had become part of the book’s appeal.
