1. John Gramlich. “What the Data Say About Gun Deaths in the U.S.” Pew Research Center. 3 Feb 2022

2. “Mass Shootings in the United States.”  Everytown for Gun Safety. March 2023

3. United States Constitution.  Second Amendment.

4. District of Columbia v. Heller.  07-290.  554 US 570 (2008).  Decided June 26, 2008. 

5. Aaron Karp.  “Estimating Global Civilian Held Firearms Numbers.” Numbers.”  Small Arms Survey. June 2018

6. “Number of Firearms Manufactured in the United States from 1986 to 2022.” Statista. 28 Oct 2024