I realized that
other neighboring countries may still have used the route thou the
desert, even if it was not called Overland Mail Baghdad-Haifa anymore.
One of these countries apparently has been
Jordan, or better said Lebanon as the cover shown here proves. The cover
was mail from Jordan on 5 September 1951 and was sent via Beyrouth (7
September 1951) to Baghdad (11 September 1951). Transit and arrival
postmark on reverse.
It would be interesting to
know who the Transport Company was which was entrusted in carrying mail from
Lebanon / Syria to Iraq at that time.