Columbia subject headings:
Age--United States.
Registers of births, etc.--United States.
United States--Genealogy--Handbooks, manuals, etc.
Harvard subject headings:
Princeton subject headings:
Age--United States.
Registers of births, etc.--United States.
United States--Census--Handbooks, manuals, etc.
United States--Genealogy--Handbooks, manuals, etc.