This sixth volume of the Complete Collection contains three more titles by the extraordinary team of Morris and Goscinny - stories that slightly predate the series'' true boom in popularity and widespread success, but would nonetheless come to be recognised as classics. Steaming up the Mississippi drops Luke in an environment he knows nothing about: a mighty river and the boats that ply it. On the Daltons'' Trail confirms the status of the four hapless brothers as the readers'' favourite antagonists. As for In the Shadow of the Derricks, it explores the Pennsylvania Oil Rush - a very real episode of US history presented here with a hefty dose of humour and whimsy, of course! And, all that, of course, comes with 48 pages of fascinating bonus material to learn more about the series and its authors!