Rails on the Prairie (Lucky Luke);

The First Transcontinental Railroad is stopped dead near its starting point, both in the East and in the West. Repeated injunctions from the president of the €œTranscontinental Railroad€ are having no effect: His workers are constantly prevented from working by agents of a mysterious traitor. But Lucky Luke witnesses one of the acts of sabotage and stops it. Soon, he is in charge of security for the entire westward push€"and he will have his work cut out for him!