Nathaniel Hawthorne's Biography
https://www.britannica.com/biography/Nathaniel-Hawthorne
A comprehensive biography of Hawthorne
E-text
http://www.lem.seed.pr.gov.br/arquivos/File/livrosliteraturaingles/birthmark.pdf
Full PDF of "The Birth-Mark"
Blackwood's Edinburgh Magazine, Volume 62, Number 385. November, 1847.
https://www.gutenberg.org/files/26433/26433-h/26433-h.htm
Full text of a November 1847 edition of Blackwood Magazine, which includes an analysis of Hawthorne and "The Birth-Mark"
