Sunday Elul 12 5703
Chumash: Tavo, First Parsha with Rashi.
Tehillim: 66-68. Also 34-36.
Tanya: XIV. To arouse (p. 461)...the highest levels. (p. 463).
The long Hemsheich (series of Maamarim) known as "B'sha'a Shehikdimu, Te'erav" was begun [1] by my father on the first day of Shavuot 5672 (1912) in Lubavitch.
He finished it on the Shabbat of Parsha Vayeira 5676 (1915) in Rostov - with the Maamar which begins VaHashem Amar.
The Hemsheich contains 144 Maamarim.
Extant in manuscript [2] is a second section which he had not delivered orally, and which is not divided into Maamarim.
Notes:
I.e. the first Maamar of the series was delivered as an oral discourse on that day by the Rebbe (R. Shalom Dovber).
Subsequently published by Kehot.