All That’s Interesting, “Charles Harrelson” — additional biographical detail: youngest of six; family members in law enforcement; six-hour standoff September 1980; cocaine use during standoff; JFK claim and subsequent recantation; forensic artist Lois Gibson and “three tramps” identification. URL: https://allthatsinteresting.com/charles-harrelson
HollywoodLife.com, “Woody Harrelson’s Dad: Everything To Know About His Infamous Hitman Father, Charles” — corroboration: Woody learned of father’s case via radio broadcast 1981, confirmed with mother; 2007 Sunday Times interview “mixed influence” and “think outlaw but would not want to hurt anyone”; 1988 People interview “articulate, well-read, charming.” URL: https://hollywoodlife.com/feature/woody-harrelson-dad-4686436/
Biography.com, “Woody Harrelson” — career facts: Wildcats (1986), White Men Can’t Jump (1992), Indecent Proposal (1993), Natural Born Killers (1994), The People vs. Larry Flynt (1996, Oscar nomination Best Actor), No Country for Old Men (2007), The Messenger (2009, Oscar nomination), True Detective (2014), The Hunger Games franchise, Three Billboards Outside Ebbing Missouri (2017, Oscar nomination Best Supporting Actor); personal: brief marriage to Nancy Simon 1985, married Laura Louie 2008, three daughters, Maui. URL: https://www.biography.com/actor/woody-harrelson
Tampa Bay Times, “Harrelson’s Dad Says Attorneys Mishandled Case” (August 7, 1998) — Charles testified in federal courtroom about mishandling; article confirmed but full text unavailable due to paywall. URL: https://www.tampabay.com/archive/1998/08/07/harrelson-s-dad-says-attorneys-mishandled-case
Guardian interview (February 17, 2012) — cited in multiple secondary sources: Woody’s quote “just being a son trying to help his dad”; direct access to source was blocked by allowlist restriction; quotes confirmed through secondary sourcing at Snopes and HollywoodLife and All That’s Interesting.