VIGNOLA, Giacomo Barozzi da (1507-1573). Le Due Regole della prospettiva pratica. Rome: Stamperia Camerale, 1611. Second edition, revised and expanded by the mathematician Egnazio Danti, with a dedication by Geremia Guelfi to Prince Marcantonio Borghese. Compared to the 1583 editio princeps, this edition is notable for its extensive and structured commentary, offering a systematic exploration of the theoretical implications of Vignola's work. Folio (345 x 245mm). Engraved title-page, eight full-page engravings, and numerous in-text illustrations (marginal wormholes to title-page; old repair to lower margin of leaf O with partial loss of letters; central dampstain affecting some inner margins). Bound in contemporary vellum (minor losses). Provenance: Marabitti (early ownership inscription). (1)