Gildersleeve's Latin Reader & Latin Primer

You can find many simple Latin prose fables in the readers that were widely published in the 19th century. In the 20th century, these kinds of readers gradually disappeared, as the pedagogical pendulum swung in the direction of reading Roman authors only. Fortunately, though, these Latin readers are available now at GoogleBooks, and they are a treasure-trove of easy Latin reading.

One of the best of these readers, in my opinion, is Basil Gildersleeve's Latin Reader. Here is a link to the Table of Contents for the 1871 edition of Gildersleeve's Latin Reader; below is a list of the items contained in the Aesop's fables section:

Fable 1. Taurus et musca page image
Fable 2. Asinus aegrotus page image
Fable 3. Culex et Passer page image
Fable 4. Societas Leonina (Ovis etc.) page image
Fable 5. Leo et Mus page image
Fable 6. Nero et Phylax (Canes et Os) page image
Fable 7. Leo Senex (Vestigia) page image
Fable 8. Cuculus et Sturnus page image
Fable 9. Acanthis et Luscinia page image
Fable 10. Asinus Pelle Leonis Indutus page image
Fable 11. Vulpes Orator Pacis page image
Fable 12. Cervus (Ad Fontem) page image
Fable 13. Puer Mendax page image
Fable 14. Ranae et Rex Earum page image
Fable 15. Ranarum Convicia page image
Fable 16. Equus et Homo (et Cervus) page image
Fable 17. Asinus et Catulus page image
Fable 18. Mures et Tintinnabulum page image
Fable 19. Amici et Asinus page image
Fable 20. Amici et Ursus page image
Fable 21. Lupus Ovis Pelle Indutus page image
Fable 22. Grus et Lupus page image
Fable 23. Mors et Senex page image
Fable 24. Feles et Vespertilio page image
Fable 25. Mercurius et Securis page image 1 - page image 2
Fable 26. Graculus et Pennae page image
Fable 27. Agricola et Filii (Virgulae) page image
Fable 28. Simia Rex et Vulpes page image
Fable 29. Vulpes Fugiens page image 1 - page image 2
Fable 30. Anguis, Canis et Rusticus page image

There is also an 1882 Latin Primer by Gildersleeve which takes a different approach, blending readings in with grammar exercises, followed by a 30-page reading section at the end of the book. Here is a list of the titles in the reading section of the 1882 Latin Primer:

1. Asinus pelle leonis indutus
2. Quod catulum, non decet asinum
3. Cervus
4. Senex et Mors
5. Vulpes orator pacis
6. Diogenes
7. Minus perferte, mais ne veniat malum (Ranae et Rex Earum)
8. Parva res concordia crescunt (Pater et Virgulae)
9. Vespertilio
10. Duobus litigantibus, tertius gaudet (Asinus Controversus)
11. Animi tranquilitas (Caligula)
12. Contentio de asini umbra
13. Dictum citium quam factum (Mures et Tintinnabulum)
14. Bias
15. Quae sit gratia eorum, qui aliud clausam in pectore, aliud in lingua promptum habent (Lupus, Venator et Pastor)
16. Paris
17. Menenii Agrippae fabula (De Ventre et Membris)
18. Simius Rex
19. Codrus
20. Duo si faciunt idem, non est idem (Securis in Fluvium Delapsa)
21. Orestes
22. Somnium (Duo Arcades Iter Facientes)
23. Nihil magis ridetur quam quod est praeter exspectationem (Silus et Crassus)
24. Servilis taciturnitas (Piso et Clodius)
25. Quid est deus? (Hiero et Simonides)
26. Androclus et leo