Dialogo sopra i due massimi sistemi del mondo

No book-club edition exists for a 1632 quarto. The reprint traps are the 1635 Strasbourg Latin Systema cosmicum, the later collected editions of Galileo's Opere, and modern facsimiles. Within the 1632 edition itself, the frequent absence of the della Bella frontispiece and of the page 92 cancel slip reflects how the book was distributed rather than a later printing — but for that same reason a frontispiece supplied from elsewhere is a known concern, and Whitmore's description of a copy records checking the frontispiece for the correct, thicker paper stock and dark-ink impression consistent with the initial run.