Revolutionary Science: Movable Books and the Medieval Universe (2022).

For a similar talk with better sound, see “Around the World…” below.

How Do We Know How Words Were Pronounced in Languages No Longer Spoken, Like Old English? (2020).

Around the World in Eighty Ways: Diagramming the Cosmos in UPenn MS Codex 1881 (2019).

Lost Words (2018). With Emily Steiner.

Orientation to LJS 445, a 15th-century astronomical compilation (2018).

Orientation to LJS 497, a 16th-century text on the astrolabe (2018).