In a speech on 27 Shevat 5752 (1.2.92), the Rebbe concludes with a wish for Moshiach to come immediately, in the literal sense of the word.
The Hebrew word for “immediately” is מייד (pronounced “miyad”). The Rebbe explains that this word forms an acronym consisting of three names: Moshe, Yisrael (Baal Shem Tov), and David (King Moshiach).
In footnote No. 148, the Rebbe adds that this word has another acronym relevant to our generation. The word “miyad” hints at three people connected to the Previous Rebbe in a way close to us: Moshiach (his name is Menachem), Yosef Yitzchak (Rebbe Rayatz), and Dov Ber (the second name of Rebbe Rashab).
From this, it is quite clear that the Rebbe hints at himself as Moshiach. The three people connected to Rebbe Rayatz are himself, his father, and his son-in-law — Rebbe King Moshiach!
It is also interesting to note that unlike the last two letters, which correspond to names, the Rebbe first writes about himself as “Moshiach” and then adds in parentheses that “his name is Menachem.”
Chassidim cite a saying from “Pirkei Avot” (3:17): “If there is no flour, there is no Torah,” and interpret it thus: "If there is no flour" — if there is a lack of understanding of who Moshiach is, as mentioned in footnote No. 148 (the gematria of "kemach" — flour), then "there is no Torah“ — the study of Redemption becomes incomplete.
The Hebrew word for “in the literal sense” is ממש (pronounced “mamash”). Chassidim have a tradition that this word is an acronym of the Rebbe’s name — Menachem Mendel Schneerson!