I think I also alluded to this on a previous post.  At the end of the Vittel crisis in early April, the WRB was complaining about Ambassador Hayes in Spain, who continued to oppose the idea of having a WRB rep in Madrid.  Morgenthau cautioned Josiah DuBois in particular not to go behind Hayes’ back, since that would give Hayes the justification to complain to the State Dept.  So DuBois didn’t go behind Hayes’ back and talk to the Spanish ambassador in Washington to intervene with his government. He just had Clarence Pickett of the American Friends Service Committee do it.