C. S. Lewis — cropped - age 48
Photo Credit: By Source, Fair use, https://en.wikipedia.org/w/index.php?curid=7049156

A chart from Trithemius' Steganographia — A chart from Johannes Trithemius' Steganographia in the hand of John Dee who copied the entire manuscript in 1591
Photo Credit: By John Dee - CC0, https://commons.wikimedia.org/w/index.php?curid=47024881

Abbey of Monte Cassino —
Photo Credit: CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=29347

Saint Benedict writing the rules — Painting (1926) by Hermann Nigg (1849–1928).
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=910099

8th-century copy of the Rule of Saint Benedict —
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=2088446

Saint Benedict of Nursia — Detail from a fresco by Fra Angelico (c. 1400–1455) in the Friary of San Marco Florence.
Photo Credit: By Fra Angelico - Public Domain, https://commons.wikimedia.org/w/index.php?curid=147499

Pope Paul VI —
Photo Credit: By Vatican City -Public Domain, https://commons.wikimedia.org/w/index.php?curid=14709864

Epitome Astronomiae Copernicanae (1618) —
Photo Credit: By Kepler, Johannes - Public Domain, https://commons.wikimedia.org/w/index.php?curid=50373356

Index Librorum Prohibitorum — cropped from title page (Venice 1564)
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=433142

Steganographia —
Photo Credit: By Trithemius, Johannes. Steganographia. Frankfurt: Johannes Saurius?, 1606.Public Domain, https://commons.wikimedia.org/w/index.php?curid=63528432

Tabula recta —
Photo Credit: By Brandon T. Fields - Public Domain, https://commons.wikimedia.org/w/index.php?curid=15037524