《Time Telling Through the Ages》 - 免费有声读物

A history of timekeeping from the stone age through to American mass production, covering timepieces from the sundial and water clock through the key inventions driving advances in the accuracy of clocks and watches in both Europe and America. The book was conceived and sponsored by the Ingersoll Family as a celebration of their then 25 years of watchmaking. - Summary by Chris Cartwright