The US_County_Boundaries data is a polygon shapefile available from the USGS data catalog at this address: https://www.sciencebase.gov/catalog/item/4f4e4a2ee4b07f02db615738.
Click on the download zip link, as shown in the image. Unzip the file into a project folder (for example, C:\GeospatialPy3\Chapter11) so it can be accessed throughout the chapter:
The Arenas_NBA shapefile is available here: https://www.sciencebase.gov/catalog/item/4f4e4a0ae4b07f02db5fb54d.
The Congressional_Districts shapefile is available here: https://www.sciencebase.gov/catalog/item/4f4e4a06e4b07f02db5f8b58.
The US_States ...
