Gravity and electricity by Hermann Weyl (1918) Updated 2025-07-16
Published on the session reports of the Royal Prussian Academy of Sciences at Berlin 1918 page 464.
Is about Maxwell's equations in curved spacetime, and notably introduces gauge theory.
Viewable for free at: archive.org/details/mobot31753002089727/page/464/mode/2up.
Prussian Academy of Sciences Updated 2025-07-16