Anatomical fugitive sheet, flap 1 (1573)

In this view, with the top flap lifted up, you can see some of the interior organs, including lungs, heart, stomach, and intestines.

Anatomical fugitive sheet, flap 2 (1573)

With the second flap lifted, we can now see a layer of reproductive organs.

Anatomical fugitive sheet, flap 3 (1573)

With the final flap lifted, the figure's skeleton is revealed.

Apian, Cosmographicus, 1524 (C4v)

With this 4-part movable diagram from Apian’s Cosmographicus, the user can practice a series of complicated calculations, including latitude, the times of sunrise and sunset, the duration of dawn and dusk, and the height of the sun.

Apian, Cosmographicus, 1524 (H4v)

In this middle of this page, and obscuring some text, is the string and paper securing the discs of the volvelle on the other side of this leaf.

Balbi, Catholicon, 1460 (1r)

One of the first books to be printed, the 1460 Catholicon continues to be surrounded by uncertainty about exactly who made it and what processes were used. Although it was once assumed that Gutenberg printed the book, that is now doubted. And recent theory is that the book was not printed with individual pieces of movable type, but with cast two-line slugs of type, thus explaining the near exact later impressions printed in 1469 and 1472.

Bible, Polyglot, 1657 (T1v)

An example of a "polyglot" Bible---a Bible printed in its earliest languages and translations. On this leaf you can see texts in Hebrew, Latin, Greek, and Syriac, each in their own place and separated by hand-drawn red ruling.

Boethius, Arithmetica, 1492 (2a1r)

This edition of Boethius uses a title label on the first page of the book to provide a quick identification of the text.

Boethius, Arithmetica, 1492 (2a1v)

The text of this edition begins "Incipiunt duo libri de Arthimetica" but the title of the book is taken not from this phrase, but from the title label on the previous page. The space for the initial letter, like others in this volume, has been left unfilled.

Boethius, Arithmetica, 1492 (2l8r)

On this last leaf of text, the printer has included both a colophon identifying who printed the book and a register of the last words printed on the first four leaves in each gathering of the two-volume set.