Here's a useful resource for your bookmarks. The Perry-Castañeda Library Map Collection at the University of Texas has a great page of links to maps from historical atlases. They also have images from some of the maps in their own collection ( Read more... )

Today's nifty discovery is a website devoted to the world's oldest known treatise on shipbuilding.

Michael of Rhodes was a Venetian mariner whose career spanned the first half of the fifteenth century. He compiled a book of useful information for sailors, including tables for keeping track of times and dates, navigation methods, mathematical ( Read more... )