A very good comprehensive overview and controlled pen of this amazing universe that is the steampunk! I recommend it to anyone who is interested in the genre itself, but also to play fans of fantasy, fantastic or SF for qu'entretien steampunk links with these other literatures. The book is well built, full of references, with some nice pictures. Reading it makes you want to discover everything! One downside for me, love for this movement of the author gives some rave passages for works that do not deserve so much ... I leave you good judges! To read!