1. Dictionary of National Biography, 1885-1900, the original 63 volumes, published between 1885-1900. These biographies use the suffix DNB00.
2. Dictionary of National Biography, 1901 supplement, first supplement of 3 volumes, published 1901. These articles use the suffix DNB01. With Queen Victoria’s passing, 22 January 1901, this era came to a close. Prefatory Note
3. Dictionary of National Biography, Index and Epitome, published 1903 as one volume, provided condensed versions of all previous DNB biographies.
4. Dictionary of National Biography, Errata, published 1904 in a single volume. These corrections are being incorporated into applicable DNB00 and DNB01 articles.
5. Dictionary of National Biography re-issued nearly every article from the 66 volumes contained in the original and first supplement. This reissue, contained in 22 volumes, occurred between 1908 & 1909 and incorporated the 1904 Errata.
6. Dictionary of National Biography, 1912 supplement, published 1912 in three volumes, includes articles from those who passed between 1901 & 1911. These articles use the suffix DNB12.

The 1912 Index was the last version of the DNB written by the original publishers, Smith, Elder & Co. Subsequent versions were published by Oxford University Press. Their publications ran until 1996.