In 2002, Design Observer founding editor Jessica Helfand published a book about volvelles
—those circular, often intricately designed charts for calculating everything from Jell-o recipes to gin cocktails to gestational cycles—a particular form of paper ephemera that turns out to originate in the middle ages. Published by Princeton Architectural Press
, the book proved popular to design fans, science nerds, and perhaps especially design fans who are science nerds.
The collection itself now resides at Yale University
, but we have retained the images and are now pleased to share them here with our readers as a curated collection of wall clocks
. We'll be adding new images over the next few weeks, so stay tuned.