Romanticism
http://www.fordham.edu/halsall/mod/modsbook15.html
This site provides an excellent background and literary analysis of the entire Romantic period and does an excellent job of placing Shelley in this literary era.
Percy Bysshe Shelley
http://www.poets.org/poet.php/prmPID/179
This site includes a biography of Shelley and a brief analysis of his complete canon, including a list of his complete works. It helpfully shows how Shelley relates to his Romantic contemporaries.
Percy Bysshe Shelley (1792-1822)
http://www.poetryfoundation.org/archive/poet.html?id=81454
Here, the Poetry Foundation provides a brief biography of Shelley and links to the text of many of Shelley's poems.
The Literature Network: Percy Bysshe Shelley
http://www.online-literature.com/shelley_percy/
An in-depth analysis of many of Shelley's works with many related links, discussion questions, and a forum area for discussion.
Peterloo Massacre Index
http://www.spartacus.schoolnet.co.uk/peterloo.html
A great deal of information on the Peterloo Massacre, the subject of "The Mask of Anarchy."
Photos: Mont Blanc
http://www.visoterra.com/photos-mont-blanc/
Stunning photos of Mont Blanc.