Cartographic and Architectural Records at the National Archives in College Park, MD | National Archives– This is the blog link I have chosen. I think it is really cool how it contains all different maps of different times of California from many different eras, as well as many other writings and documents to go along with the times of these maps that can give context and other interesting events during these times.
Atlas of the Historical Geography of the United States (richmond.edu)– this is the atlas link that I have chosen. I find this atlas incredible interesting because it shows the geography of the united states and how it has been split up by votes in each presidential election for about 100 years. And with this atlas, on the side it gives a lot of context and material about each part of this atlas and for each election.