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This map indicates the location of ships sunk by U-boat activity in the Mediterranean, the Atlantic, and the North Sea, specifically within those areas open to unrestricted warfare.  The total was roughly 7,500 vessels.

Risky Business

Posted by: Mike Klein

Brown, red, and yellow tinted map illustration of the continents of Europe, Asia, Africa and Australia, with a circular frame around them

Surveying: The Art of Measuring Land, Part One

Posted by: Ed Redmond

Brown, red, and yellow tinted map illustration of the continents of Europe, Asia, Africa and Australia, with a circular frame around them

Celebrate GIS Day at the Library of Congress on Wednesday, November 13th!

Posted by: Tim St. Onge