https://www.sec.gov/files/county.json?raw=1 https://www.sec.gov/files/county.json?raw=1&x=.html https://www.sec.gov/files/county.json?raw=1&pretty=1
https://www.sec.gov/files/county.json?raw=1&download=.txt https://www.sec.gov/files/county.json?cache=raw