The Library of Congress digital exhibition “Maps in Our Lives” is based on a series of chronologically-ordered maps of land that George Washington acquired in the 1760s. This land was adjacent to his Mount Vernon estate. Not only does the exhibition track the changes in ownership and land use, it also demonstrates changes in cartographic techniques.
What most struck me after looking the site over, however, was the realization that all these maps, created over a period well exceeding two centuries, were “framed” quite similarly. This is because all these maps are concerned with private land ownership, either exclusively of or including the “River Farm” property.
This is a small insight (maybe trivial, even), but still worth remembering. While noting the changes and improvements in the survey plat, or any other map genre, it’s important to note continuities and constants.