"The Idaho Bureau of Vital Records and Health Statistics maintains birth and death records filed from July 1911 to the present, and marriage and divorce records filed from May 1947 to the present. Some counties may have older birth, death, marriage, or divorce records in their files, but county files contain only records of vital events that occurred in that county."
"The Illinois Department of Public Health preserves the state's records on births, deaths, marriages and divorces. More than 400,000 are registered annually. Since birth and death records first began to be collected by the Department in 1916, 27 million have been placed on file, including some delayed records dating back to the mid 1800s."
"Birth records in the ISDH Vital Records office begin with October 1907. Prior to October 1907, records of birth are filed only with the local health department in the county where the birth actually occurred.Death records in the ISDH Vital Records office begin with 1900. Prior to 1900, records of death are filed only with the local health department in the county where the death actually occurred. For deaths occurring from 1900 to 1917, the city and/or county of death is required in order to locate the record."