This two-volume catalogue is the second Part of the catalogue raisonne devoted to the large corpus of architectural and topographical drawings from the Paper Museum. The first Part (A.IX), published in 2004, was dedicated to drawings of ancient Roman topography and architecture, while the present one covers Renaissance and seventeenth-century architectural drawings. Commissioned and collected by Cassiano dal Pozzo (1588-1657) and his younger brother Carlo Antonio (1606-89), these drawings are today divided between the Royal Library at Windsor Castle, the British Museum’s Department of Greek and Roman Antiquities, and numerous other institutions and private collections worldwide. Bringing them here together emphasises the remarkable range and quality of the collection as a whole and provides an opportunity to bring to public attention drawings that are for the most part unpublished and unidentified. As a collection of mostly earlier material acquired rather than commissioned by Cassiano and Carlo Antonio, the drawings provide a comprehensive coverage of Renaissance architecture and architectural ornament, including churches, palaces, villas and military fortifications, as well as designs for architectural fitments and decorative schemes. Many of the drawings are of particular scholarly interest as actual project drawings from the hands, workshops or immediate circles of distinguished sixteenth- and seventeenth-century architects, including Raphael, Giulio Romano, Antonio da Sangallo the Younger, Pirro Ligorio, Jacopo Barozzi da Vignola and Gianlorenzo Bernini. As such they are connected with some of the most famous buildings constructed or remodelled during this period, among them St Peter’s and St John Lateran in Rome and the princely palaces in Mantua, Piacenza and Granada in Spain. A smaller group of drawings is associated with architectural theory and includes a remarkable series of facade schemes here attributed to Sebastiano Serlio. A general introductory essay in Volume One explores the distinctive character of the dal Pozzo collection of modern architectural drawings and is followed by the catalogue entries grouped into schemes for whole buildings, with plans and elevations (or both) of ecclesiastical and secular works arranged according to their location in Italy or, occasionally, France, Spain and elsewhere. Volume Two is devoted principally to architectural fitments, such as church furnishings, doorways and chimneys, as well as painted decorations and carved ornaments. It then moves to military subjects, cataloguing drawings of fortifications, sieges and related subjects, followed by three drawings of topographical views and two drawings, omitted in A.IX, of ancient decorative designs.