In our current read, Augustus, the novel by John Williams, Nicolaus of Damascus writes letters to Strabo of Amasia, the ancient geographer and an exact contemporary of Augustus. This Wikipedia page (as usual handle with care) has a link to a biography at Perseus Digital Library, and indeed the entire work can be found there: Strabo, Geography
As with most ancient authors, not that much is known of Strabo, and the Loeb edition's introductory material, by the translator Horace Leonard Jones, is about as good as one can get. The Loeb edition also provides a thorough bibliography, including a very summary discussion of the principal manuscripts of the Geography: that too will eventually find its way onsite, except for some few addenda made by the Loeb editors in the later reprintings and therefore still under copyright. Further good information, especially on editions and translations, may be found on Sarah Pothecary's site.
More editions can be found at the Internet Archive.
Loeb's Classical Library edition in print makes up 17 volumes with the Greek text and English translation side by side.
It certainly is an amazing work for its time. Maybe we should put selections from The Geography on next year's reading list.