Russell’s Corrected Page Proofs of Principia Mathematica

We report here on the set of complete proofs of Volumes I and II of Whitehead and Russell’s Principia Mathematica newly acquired by the Bertrand Russell Archives. These proof sheets, marked with a number of corrections, were likely bound for Russell by Cambridge University Press, though not exactly the same as the first edition. We assess the information to be gained from the texts and the corrections, most significantly around *110 in Vol. II …