Now in a deluxe collector's edition, this unabridged classic is bound in a handsome burgundy finish with gold stamping and spine hubs.

History of calendars. The Millenium - do we have the correct date? Why do we celebrate Easter Sunday when we do? Find out in this book.

This book provides an overview of the astronomical practices that continued through the so-called "Dark Ages.

Five volumes of inspirational thoughts for each day of the year. These books are a classic reprint of a long-time bestseller.

This translation of the full text of The Reckoning of Time includes an extensive historical introduction and a chapter-by-chapter commentary.