http://salt.umd.edu/T-RACES/colormap.html
https://dsl.richmond.edu/panorama/redlining/#loc=10/34.005/-118.658&city=los-angeles-ca
https://www.tolerance.org/magazine/fall-2018/toolkit-for-segregation-by-desig
https://www.tolerance.org/magazine/fall-2018/toolkit-for-segregation-by-design
https://www.arcgis.com/apps/Cascade/index.html?appid=3b5359a114d64af48b500563d7ac178a
https://www.citylab.com/equity/2016/10/a-digital-window-into-the-roots-of-redlining/504656/
http://salt.umd.edu/T-RACES/colormap.html
https://www.zinnedproject.org/materials/color-line-colonial-laws