In these maps (1813-1861) the yellow specks are sections (square miles) in which there were one or more transactions during a year. Red specks are sections that were entirely in private ownership by that year.
If you want to see it again hit your RELOAD button. You can also see a static version of a portion to get an idea of what it looks like..
I have also put together a sort of tour of these images.
NOTE: Don't make permanent links to these pages, this is not where this exhibit will be in the future.