Yeah, but in English they are hard to get hold of. There were some American Editions of Corto Maltese out in the 80s, but they are mostly out of print and can go for silly money. For example, I bought "Corto Maltese in Africa" for about a pound in a bargain bin in Nostalgia and Comics in Birmingham about twenty years ago. The cheapest second-hand copy on Amazon right now is about £30, and new copies go for £60+.
The book I pinched the pics from earlier in the thread is a brand new copy, and cheap to get. Not in English though, that one has never been released in English. Pratt never seems to have taken off in the English-speaking market, so while his stuff is constantly in print in Italian, French and other European language editions, the English books are collectors items. They did however, release "The Ballad of the Salt Sea", the first Corto Maltese book in English a couple of years ago. So there is hope that we may get some more if that one sells.