Kammala jumla mai zuwa: Mason ya shirya daftarin farko na Yarjejeniyar Hakkin Virginia a 1776, kuma kalmominsa sun kasance mafi yawan rubutun da aka karɓa ta ƙarshe na Juyin Juya Halin Virginia. Ya kuma rubuta kundin tsarin mulki na jihar; Thomas Jefferson da wasu sun nemi taron ya karɓi ra'ayoyinsu, amma sun gano cewa ba za a iya dakatar da sigar Mason ba. A lokacin yakin juyin juya halin Amurka, Mason ya kasance memba na majalisar wakilai mai karfi na Majalisar Dattijai ta Virginia amma, ga fushin Washington da sauransu, ya ƙi yin aiki a majalisar.
Majalisa ta Continental a Philadelphia, tana ambaton alkawurran kiwon lafiya da na iyali.