Title from caption title on leaf *1r above printing privilege.
Imprint from colophon (leaf FF8r).
Printed in Aldus's types 2:114R, 10:82R, and 11:80R (italic).
Signatures: *¹⁰; a-y⁸; A-G⁸ H¹⁰ I-N⁸ O¹⁰ P-FF⁸: 422 leaves.
Paper format: Super-chancery folio
Aldus's dedicatory letter to Cardinal Francesco Piccolomini (leaf *1v) dated 19 September 1500.
Edited by Bartolomeo da Alzano.
Woodcuts: large (9-line) and small ornamental initials in different styles (strapwork, foliated, white-on-black); full page woodcut of Saint Catherine on verso of leaf *10; in her outstretched hands she holds a book and the sacred heart of Jesus, each containing lines of text in the Aldine italic, the first known use of this italic (in copies of an earlier issue, the book and heart are blank, lacking the italic text).
PML copy leaf dimensions: 31.6 x 21.3 cm.
Epistole devotissime de Sancta Catharina da Siena
Hand decoration: Rubrication not required. Annotations: No marginal notations in text.