10, Intro., Frankenstein 1831 edition ↑ Shelley, Mary, Paragraphs 11–13, "Introduction" Frankenstein (1831 edition) Gutenberg ↑ Bennett, An Introduction, 30–31; Sunstein, 124. ↑ Radford, Tim, Frankenstein's hour of creation identified by astronomers, The Guardian, 25 September 2011 (retrieved 5 January 2014) 1 2 Seymour, 195–96. ↑ Howard, Jennifer (7 November 2008).