The Harvard Classics. Volume 09. Letters and Treatises of Cicero and Pliny

New York: P.F.Collier & Son Corporation,.1909. -424 p.Letters of Marcus Tullius Cicero
Friendship and Old Age
Letters of Gaius Plinius Caecilius Secundus
With Introductions and Notes.
The Harvard Classics, originally known as Dr. Eliot's Five Foot Shelf, is a 51-volume anthology of classic works from world literature, compiled and edited by Harvard University president Charles W. Eliot and first published in 1909.