letters from one president to another
... that the customary salutation used in letters from one president to another is "My Great and Good Friend"?
... that the customary <a href="./Salutation" id="mwCfc" rel="mw:WikiLink" title="Salutation">salutation</a> used in <b id="mwCfg"><a href="./Diplomatic_correspondence" id="mwCfk" rel="mw:WikiLink" title="Diplomatic correspondence">letters from one president to another</a></b> is "My Great and Good Friend"?