Les Cousins Dalton is a Lucky Luke comic written by Goscinny and Morris. It is the twelfth album in the Lucky Luke Series. The comic was printed by Dupuis in 1958 and by Cinebook in 2011 as The Dalton Cousins. This album is the first of many Lucky Luke albums to feature the brothers Joe, William, Jack and Averell Dalton as significant characters (they appear briefly in the previous album Lucky Luke contre Joss Jamon as part of the jury set out to convict Lucky Luke). Within the Lucky Luke universe, they are cousins of the real-life Dalton Gang. (The "real" Daltons appeared in, and were killed off, in the earlier album Hors-la-loi.) As the story begins, the Dalton cousins are rather inept outlaws who aspire to become as notorious as their cousins, and vow to get even with Lucky Luke, the man responsible for their cousins' demise. Source: Wikipedia (en)