Free Literature.org is one of the best resources on the web for finding free ebooks in all languages. If you are looking for Dutch, German,Spabish, Creole, Welsh, Danish, Hungarian, Arabic, Bangla, Bhutanese, and even more, then check them out. They also have a section specifically dealing with poetry. Librarians, especially, should take a look at the resources they offer.
Mark D’Hooghe just sent me an email letting me know that this Voltaire work has just been made available.
A remarkable resource for the worldwide reading community.
The Voltaire is actually available from Project Gutenberg, freeliterature.org are just signposting it.
To Paul Gahan: the people from freeliterature.org digitised the Voltaire for Project Gutenberg.