Perry's Index to the Aesopica
Fables exist in many versions; here is one version in English:
THE RAVEN AND HERMES
A raven who had been caught in a snare prayed to Apollo, promising that he would
make an offering of frankincense if Apollo would rescue him from the snare.
The raven escaped, but he forgot about his vow. Later on he was caught in another
snare, but he ignored Apollo this time and instead vowed a sacrifice to Hermes.
Hermes then said to the bird, 'You wretched creature! How can I trust you, when
you betrayed your former master?'
Aesop's Fables. A new translation by Laura
Oxford University Press (World's Classics): Oxford, 2002.
cover, with new ISBN, published in 2008; contents of book unchanged.
Perry 323: Gibbs (Oxford) 479 [English]
Perry 323: Townsend 231 [English]
Perry 323: Chambry 166 [Greek]
You can find a compilation of Perry's index to the Aesopica in the gigantic appendix to his
edition of Babrius and Phaedrus for the Loeb Classical Library
(Harvard University Press: Cambridge, 1965). This book is an absolute must for anyone interested
in the Aesopic fable tradition. Invaluable.