Sunday Mar 2

Geller & Bluestone visited me
during the day in evening
met friends at the Z.Z.

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I think "Z.Z" refers to Zeire Zion, a left-leaning Zionist organization that strongly favored Jewish settlement in Palestine. Papa has mentioned them before, and while I know he liked to socialize at their local chapter I don't know if he did much else with them. I'll keep looking for more information.