Funeral of William Shelley: Recollections by Edward Trelawny on the death of William Shelley. Includes entry from Shelley's autobiography.
Grade Saver: Mary Shelley: One-page biography.
LiteratureClassics.com: Mary Shelley: Biographical information on Shelley, as well as a detailed synopsis of Frankenstein.
Mary Wollstonecraft Godwin Shelley: Letters and journals.
Mary Wollstonecraft Shelley Chronology and Resource Site: Chronology, reviews, and bibliography.