The Rolls contain more than 101,000 names from 1898-1914 (primarily from 1899-1906). They can be searched to discover the enrollee's name, sex, blood degree, and census card number. The census card may provide additional genealogical information, and may also contain references to earlier rolls, such as the 1880 Cherokee census. A census card was generally accompanied by an "application jacket". The jackets then sometimes contain valuable supporting documentation, such as birth and death affidavits, marriage licenses, and correspondence. Today these five tribes continue to use the Dawes Rolls as the basis for determining tribal membership. They usually require applicants to provide proof of descent from a person who is listed on these rolls.