The first 32 plates are close to Fowler's type A, the plates from the original ed. of 1563, but most differ in details from Fowler's description. Type A also comprises the later Roman eds. of Vaccarius (1607-1610) and Rossi (ca. 1617). The present ed. includes the seven plates of the "Porte di Michel Angelo" (nos. 38-44) and the plate of the five orders (no. 3), all of which probably first appeared in Orlandi's ed. of 1602; see Fowler. It is therefore probable that the present ed. appeared between 1602 and Hendrik van Schoel's death in 1622.

Engraved throughout. Architectural title leaf includes the arms of Cardinal Alessandro Farnese, to whom the work is dedicated, and the half-length port. of Vignola facing to the viewer's right. The imprint has been recut with van Schoel's name replacing that of an earlier printer, traces of which remain. Plates are printed on one side of the leaf only, and most are arranged in pairs on a verso and the facing recto. Arabic numbering has been added, in addition to the original Roman.

Bound after plate 44 in Getty copy is a leaf with a later (19th- century?) pen and wash drawing of a Gothic window with tracery and pinnacle.

Binding: later gray pasteboard. Author & title written on spine. Centered on front pastedown is Giovanni Muzio's etched bookplate by Giacomo Manzù.