By the end of the 5th cent. bce, books were in general circulation, even if some regarded them as a fad of intellectuals like *Euripides (Ar. Ran. 943, cf. fr. 506 KA); Athens had booksellers (Eup. fr. 327, Aristomenes (2) fr. 9, KA), and exports reached the Black Sea (Xen. An. 7. 5. 14), see euxine. Individuals collected the best-known poets and philosophers (Xen. Mem. 4. 2. 1); an imagined collection of the later 4th cent. bce includes *Orpheus, *Hesiod, *tragedies, *Choerilus (probably (2)), *Homer, *Epicharmus, and all kinds of prose, including Simus' Cookery (Alexis fr. 140 KA). Of famous collectors (Ath. 1. 3a), *Aristotle took first place (Strabo 13. 1. 54); but his library, like that of the other philosophic schools, remained private property (for its chequered history, see Strabo, ibid.; Plut. Sull. 26. 1–2).Institutional libraries begin with the Hellenistic monarchies; the ‘public’ library of *Pisistratus (Gell.