Brill's Companion to Horace, edited by Hans-Christian Günther, Brill, 2012, p. 7, Google Books
gutenberg.org
Fraenkel, Eduard. Horace. Oxford: 1957, p. 1.
For the Life of Horace by Suetonius, see: (Vita Horati)
jstor.org
'Political' Epodes are 1, 7, 9, 16; notably obscene Epodes are 8 and 12. E. Fraenkel is among the admirers repulsed by these two poems, for another view of which see for example Dee Lesser Clayman, 'Horace's Epodes VIII and XII: More than Clever Obscenity?', The Classical World Vol. 6, No. 1 (September 1975), pp 55–61 JSTOR4348329