January 6, 1954
Dear Professor Einstein:
I have carefully put into writing my lecture before the Forum of the Graduate Students here (October 14, 1953). Doing so I was guided by the desire to place it before you for reading.
In the written form I have considerably shortened the archaeological and geological parts of my address; but I have elaborated on the astronomical part of it to a greater length than I did orally. Before submitting this paper to you I have asked Professor Lloyd Motz of the Astronomy Department of Columbia University to check its factual statements.
I am aware of the great demand on your time made by various authors; therefore have my sincerest thanks for agreeing to read this paper.