Deaf-mutes in the United States. Analysis of the census of 1910 with summary of state laws relative to the deaf as of January 1, 1918
At head of title: Department of commerce. Bureau of the census. Sam. L. Rogers, director "This report was prepared in the Division of revision and results under the general direction of Dr. Joseph A. Hill, expert special agent. The analytical text is mainly the work of Reginald L. Brown, who also had immediate charge of the tabulation of the data."--"Letter of transmittal," p. 7
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