"Tell me, brother squire," asked the duchess (whose title, however, is not known), "this master of yours, is he not one of whom there is a history extant in print, called ’The Ingenious Gentleman, Don Quixote of La Mancha,’ who has for the lady of his heart a certain Dulcinea del Toboso?"
There are no more uses of "extant" in the book.
Show samples from other sources
But as you know, to do this with extant technology would have been prohibitively expensive for the average person.
Dave Eggers -- The Circle
"That was one of only five extant copies!" he moaned.