Composed in July 1816 while touring the Chamonix Valley, “Mont Blanc” was published in the Shelleys’ 1817 History of a Six Weeks’ Tour, a travel narrative concerning two trips taken by the Shelleys and Claire Clairmont (Mary Shelley’s stepsister). There are two versions of “Mont Blanc”—the first, the version found in History of a Six Weeks’ Tour, and the second, a version which came to light in the Scrope Davies Notebook discovered in December 1976. Leader and O’Neill’s Major Works prints both versions as version A and version B, where Reiman and Fraistat’s Shelley’s Poetry and Prose prints the version found in History of a Six …
Callaghan, Madeleine. "Mont Blanc". The Literary Encyclopedia. First published 25 April 2012; last revised 30 November -1.
[http://www.litencyc.com/php/sworks.php?rec=true&UID=34179, accessed 25 April 2015.]