Scientific American - "The Principle of Relativity"
by E. E. Fournier D'Albe, B.Sc

New York., November 11, 1911 - Dr. Albert Einstein

(Also including in this supplement:  A paper by Arthur Stanley (A. S.) Eddington)

Scientific American- Front Page (including "The Principle of Relativity" on Page 319)

I - Scientific American, New York, November 11, 1911