`  Heller is a good source.  Concerning the ``Irgun`` versus ``Lehi`` question you raise, the confusion is resolved thus: when Stern broke away from the ``Irgun Zvai Leumi`` (National Military Organization) he named his new organization ````Irgun Zvai Leumi be-Yisrael`` (National Military Organization in Israel).  This is the ``Irgun`` in his letter.  It was only after Stern's death that the name ``Lohamei Herut Yisrael`` (Fighters for the Freedom of Israel) was adopted.`