May 2, 1922, t.l.s. N.Y., [on Carnegie Endowment for
International Peace letterhead.]
My dear colleague:
I am reading at intervals your very interest-
ing and admirable "Studies in the Theory of Human Society"[1922]. I
am getting instruction and enjoyment galore. I congratulate you
very heartily on the completion of the book.
With kindest regards, I am
Very cordially yours,
John B. Clark