https://avalon.law.yale.edu/18th_century/usconst.asp

https://uscode.house.gov/

https://statutes.capitol.texas.gov/

https://www.sunset.texas.gov/

https://www.lbb.state.tx.us/Documents/Publications/Fiscal_SizeUp/Fiscal_SizeUp_2020-21.pdf

https://library.municode.com/tx/houston/codes/code_of_ordinances