Wiktionary
book fair
n. A public event at which books are sold, often featuring appearances by authors.
WordNet
Usage examples of "book fair".
Then below it there is the book fair where along the sidewalks there are hundreds of booths with second-hand books in them and now, since the movement, there are many books, stolen in the looting of the houses which have been bombed and from the houses of the fascists, and brought to the book fair by those who stole them.
I could spend all day every day at the stalls of the book fair as I once did in the days before the movement, if I ever could have any time in Madrid.