Unfortunately, all but Boethius' Consolatio Philosophiae are restricted to use by students at the University of Virginia. Labyrinth Latin Library - A collection of ancient and medieval Latin texts, but some gopher links are outdated. Pliny's Natural History, Frontinus, Vitruvius, Ptolemy's Geography. Layout is a bit daunting, but there's a LOT of texts here. Lupa - Helps for searching for classical texts.
Navigation is in Latin.
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