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Beginning at 9 p.m. on Friday, March 27 for approximately one hour, access to user accounts and some online services will be temporarily unavailable due to scheduled maintenance of the library's catalog.
The fascinating story of how people began to chart the physical world and their place in it will take readers on a journey of their own. From Babylonia to Scandinavia, North America to China, ingenious methods and inventions will delight all those who marvel at man's spirit of adventure.