A subsidiary bookfair company works with nonprofits and schools to support book-oriented fundraisers.
From the dailyherald.com
I'm interested in the annual bookfair.
From the en.wikipedia.org
To coincide with the London Book Fair earlier this month, the trade magazine The Bookseller ran an informative article looking back at what had happened to the big advance bookfair deals of the past.
From the thisislondon.co.uk
More examples
Book fair: fair organized by publishers or booksellers to promote the sale of books
Book fair: bazaar at which books are sold or auctioned off in order to raise funds for a worthy cause