What is the oldest written source in this country that mentions this right?

Kuwait

Article 37 of the Kuwait’s 1962 Constitution protects press freedom: “Freedom of the press and of publication is guaranteed, subject to the conditions and stipulations prescribed by Law” (Constitute Project, “Kuwait's Constitution of 1962, Reinstated in 1992”).

Freedom of the Press · Country sources (all rights) · Years mentioned: 1962, 1992 · Last edited 2022-12-28 · Edit on GitHub