The Clocks

Why Didn't I Think of That?: From Alarm Clocks to Zippers

Why do Clocks Run Clockwise? and Other Imponderables

Why Do Clocks Run Clockwise?

Clockstoppers

Clocks of Iraz

Life's Imponderables: The Answers to Civilization's Most Perplexing Questions : Why Do Clocks Run Clockwise? When Do Fish Sleep? Why Do Dogs Have Wet Noses? (Life's Imponderables)

Empires of Time: Calendars, Clocks, and Cultures

The living clocks

The 13 Clocks