The Aberdeen Area History project has a sizable exhibit of historical maps, overlaid on current street maps or satellite imagery. The most recent page added combines the two Aberdeen Sanborn maps in our collection, allowing you to contrast the growing and changing city.
Take a look around Aberdeen on the map, and be sure to zoom in to see the building details. The sliders on the left hand side of the page can fade the map in or out to compare.
Read more about Sanborn Maps in this blog post.