Digitally revamped atlas of historical geography, from 1932

Posted to Maps  |  Tags: , ,  |  Nathan Yau

In 1932, Charles O. Paullin and John K. Wright published Atlas of the Historical Geography of the United States, a reference of almost 700 maps about a varied set of topics, such as weather, travel, and population. The Digital Scholarship Lab at the University of Richmond brought the atlas to digital life.

In this digital edition we've tried to bring—hopefully unobtrusively and respectfully—Paullin and Wright’s maps a bit closer to that ideal. First, with the exception of the historical maps from the cartography section and a handful of others (those that used polar projections, for example), we’ve georeferenced and georectified all of the maps from the atlas so that they can be overlaid consistently within a digital mapping environment. (Georeferencing is a process of linking points on a map to geographic coordinates, and georectification is a process of warping a map using those coordinates to properly align it within a particular projection, here web mercator.) High-quality scans of all of the maps as they appeared on the plates are available too.

Not only are the maps overlaid on a slippy map, but the lab also added simple interactions with tool tips and animation so you can look more specifically at the data.

I could spend all day (or several days) looking through this. [Thanks, Lee]

Favorites

Years You Have Left to Live, Probably

The individual data points of life are much less predictable than the average. Here’s a simulation that shows you how much time is left on the clock.

The Best Data Visualization Projects of 2014

It’s always tough to pick my favorite visualization projects. Nevertheless, I gave it a go.

Watching the growth of Walmart – now with 100% more Sam’s Club

The ever so popular Walmart growth map gets an update, and yes, it still looks like a wildfire. Sam’s Club follows soon after, although not nearly as vigorously.

Interactive: When Do Americans Leave For Work?

We don’t all start our work days at the same time, despite what morning rush hour might have you think.