 John Huston (I) (qv) was fascinated by mysterious author  B. Traven (qv), who was a recluse living in Mexico. Traven  approved of the director and his screenplay (by letter, obviously),  and sent his intimate friend Hal Croves to the location to be a  technical advisor and translator for $150 a week. The general  consensus is that Croves was in fact Traven, though he always denied  this. Huston was happy not to query him on the subject but his  then