Element reproduced in vector format to simulate different levels of ink coverage. Early 16th-century printing techniques play a tangential role in the book's story.
Gradient fades on back cover were made in InDesign.
Above is a template with which the author or an assistant can add the date, time, and location of the event at the bottom in white and then print as many copies as they need to promote the author talk.
The book's website gives rich details on the context and research the author conducted in preparation for writing the book, as well as where you can buy the book, upcoming and past events, and news articles.