|Credits: see below|
Ami Barav, the son of Israel Rabinovich-Barav, who was the chairman of the Israeli Chess Federation in the early 50s, and who inter alia was present as one of the organizers in the 1951 Israeli championship and was with the Israeli team in the 1954 chess Olympiad. Similar photographs from the tournament, esp. showing Oren, the winner, were already posted in this blog (see here, for example), but Barav kindly gives us more. According to him (correctly, it seems to me) the people in the photographs are, from top to bottom, left to right:
1). Gruengard (speaking), Barav, speaking to David Ben Gurion.
2). Barav, Ben Gurion, Pinchas Rosen (minister of Justice and honorary chairman of the Israel Chess Federation), and David Shimoni (the poet).
3). Gruengard, Barav, Ben Gurion, Rosen.