art includes a note from Moebius associate - Jean-Marc Officer....
I hearty certify that the original art reproduced below was down by jean Giraud and was published as page 27 of a story entitled "Fort Navajo" in issue #223 of the magazine PILOTE in 1964
It was collected as Blueberry #1 (Dargaud, 1965 series)
Also collected in 1988 and 2006 and 2017

for sale