For anyone obsessed with beautiful maps, these colorful and informative examples tracking the many paths of the lower Mississippi are a dream come true. The monumental collection was produced in 1944 by Harold N. Fisk, who drew in a rainbow of colors the path of past and current flows as the mighty river changed course and flooded over time. For a full size .zip file (197MB!) of the maps, head to the ERDC. It’s useful information, beautifully displayed. [Read more...]