Now that we know what shapefiles and layers are and we have a historical map georeferenced to guide us, let’s start creating the boundaries for a simple Congressional district. If you click through to the original, higher resolution video you will likely find it easier to follow.
Creating a Simple Congressional District Using New Layers and Polygons from LaDale Winling on Vimeo.
NOTE: Individuals using ArcGIS 10 should consult this documentation page for updated information on creating a simple Congressional district.