Wichtiger Beitrag
the Negro was criticized helpfully by Dr. W. E. B. DuBois, Editor of the _Crisis._
W. M. Steuart, Director of the United States Census, kindly supplied advance figures on the 1920 Census.
The author is also indebted to Houghton Mifflin Company, Ginn and Company, and the Macmillan Company, either for advance information on certain of their new books, or for permission slightly to adapt some of the material appearing in books copyrighted by them.
Lastly, the author is grateful to his wife for valuable assistance in correcting the proof.
THAMES ROSS WILLIAMSON.
_Cambridge, Mass._
February 7, 1922.
W. M. Steuart, Director of the United States Census, kindly supplied advance figures on the 1920 Census.
The author is also indebted to Houghton Mifflin Company, Ginn and Company, and the Macmillan Company, either for advance information on certain of their new books, or for permission slightly to adapt some of the material appearing in books copyrighted by them.
Lastly, the author is grateful to his wife for valuable assistance in correcting the proof.
THAMES ROSS WILLIAMSON.
_Cambridge, Mass._
February 7, 1922.
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