BUREAU OF THE CENSUS SAM. L. ROGERS, Director THE FEDERAL REGISTRATION SERVICE OF THE UNITED STATES: ITS DEVELOPMENT, PROBLEMS, AND DEFECTS PREPARED FOR THE SECOND PAN AMERICAN SCIENTIFIC CONGRESS WASHINGTON, DECEMBER 27, 1915, TO JANUARY 8, 1916 BY CRESSY L. WILBUR, M. D. CHIEF STATISTICIAN FOR VITAL STATISTICS OF THE UNITED STATES BUREAU OF THE CENSUS, 1906-1914 |