Shelly Romero has early memories of going to her local supermarket and picking pulp fiction off the shelves. “We were very working class; my mom was working two jobs sometimes,” she recalls. “The appeal of books being cheaper and smaller and able to be carried around was definitely a thing.”

For generations of readers, the gateway to literature was not a hushed library or a polished hardback but a wire spinner rack in a supermarket, pharmacy or railway station. There, amid chewing gum and cigarettes, sat the mass-market paperback: squat, roughly 4in by 7in and cheap enough to be bought on a whim.

But the era of the “pocket book” is drawing to a close. ReaderLink, the biggest book distributor in the US, announced recently that it would stop distributing mass-market paperbacks. The decision follows years of plummeting sales, from 131m units in 2004 to 21m in 2024, and marks the end of a format that once democratised reading for the working class.

Romero, who grew up in the working-class, Latino and industrial city of Hialeah, Florida, says: “I don’t remember a bookstore. I had the library in Miami Springs across the bridge but in Hialeah around us, what was in walking distance because we didn’t have a car, was the Publix [supermarket] and sometimes we would get books from Goodwill [thrift store] as well.

“They had that democratic aspect to them where you can just find them anywhere and it always felt like it was the pick ’n’ mix candy-type store where there is something here for everyone, whether it’s the Harlequin romance novel or something very pulpy like a sci-fi or horror novel that you could quickly get.”