I chose this out of the Lehigh section. When I clicked on it brought up a map about all the early paintings from different cities. It had sources for the printing such as the dates they were printed the location and details of the paper making. I visited the records of some to learn more about the paintings and who and where they were from. They used a data range that you can go through yourself, and it shows how printing went up and got more popular throughout the years. They use the map as the main source it looks like just to really show to people and to make it easier to understand where everything was from. I think a lot of different people helped to put this together and all the different ways to view the maps and sources.