I had meetings with President Navon, with Prime Minister Begin, Yigael Yadin (leader of the Democratic Movement for Change Party), Foreign Minister Moshe Dayan, Speaker of the Knesset (a friend of ten years standing), Shimon Peres (leader of the leading Labor Party), Mayor Teddy Kollek, Knesset member Gideon Hausner (who prosecuted the German Eichmann as Attorney General for Israel,) Professor Benjamin Mazar, who directed our great archaeological project adjoining the south wall of the Temple, Dr. Joseph Aviram of the Hebrew University, and many others.
According to Wikipedia's list of Knesset speakers at this time that role was held by Yitzhak Shamir who held that office from June 13, 1977 until March 10, 1980. Shamir would later be Prime Minister (1983-4 and 1986-92).
HWA says he has been friends with Shamir since 1968 but, as far as I can tell, Shamir is never mentioned by name in any of HWA's co-worker letters. What sort of a friendship is that?
At present it seems that HWA's claim of being a friend of Yitzhak Shamir for ten years sounds awfully hollow.