Any student of classical languages with a linguistics bent will delight at discovering W. Sidney Allen’s books Vox Latina and Vox Graeca that reconstruct the pronunciation of Classical Latin and Greek, respectively. Cambridge University Press has published them in relatively cheap paperbacks. However, there are two more works by this scholar that that don’t get anywhere near the attention they deserve, even though they are logical next steps.
The first is Accent and Rhythm: Prosodic Features of Latin and Greek (Cambridge University Press, 1973). Here W. Sidney Allen takes the linguistic reconstruction of Greek and Latin one step further from Vox Latina and Vox Graeca to encompass suprasegmental aspects of these languages. This book does demand a greater understanding of theory (whereas the earlier books expected little more than some knowledge of IPA), and it takes some work to apply Allen’s insights to one’s own enunciation.
The second book treats what is historicaly the third important classical language for Indo-European studies, Sanskrit. Allen’s Phonetics in Ancient India (Oxford University Press, 1953) was published years before Vox Latina and Vox Graeca, and is organized somewhat differently in that it is mainly a retelling of the already very detailed ancient Indian sources for Sanskrit pronunciation. However, Allen does engage in some detective work to clarify matters obscure in the ancient grammarians, such as the pronunciation of the visarga.