The 1910-1990 decennial census records are searched and official census transcripts of the results are provided to the named person(s), their heirs, or legal representatives, upon receipt of a signed Application for Search of Census Records (Form BC-600). Census transcripts provide proof of age for Social Security or other retirement benefits. They can also be used in making passport applications, to prove relationship in settling estate, in limited genealogy research or to satisfy other situations where a birth certificate or other legal documentation is needed by is not available.