Perry's Index to the Aesopica
Fables exist in many versions; here is one version in English:
THE EAGLE AND THE WREN
Aesop's wren was carried along on the shoulders of the eagle; then all of a
sudden he flew off and beat the eagle to the finish line.
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 434: Gibbs (Oxford) 238 [English]
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.