Editing Moshe Feinstein (section)

== Rabbi Feinstein's Dedications and Letters to the Rebbe ==
The depth of Rabbi Feinstein's friendship and esteem for the Rebbe can be seen in his letters to the Rebbe. In one of them he writes:<blockquote>"I hereby bless His Honor, the holy Gaon and Tzaddik, our teacher Rabbi Menachem Mendel Schneerson shlita, the Rebbe of Lubavitch, who with remarkable mesiras nefesh guards the walls of religion and spreads Torah and yiras shamayim among the Jewish people. May Hashem bless him with long life and years in his elevated leadership, in his many activities for the honor of Hashem, His Torah and mitzvos, through which he brings many who have strayed closer to our Father in Heaven and to the love of our holy Torah and practical observance of mitzvos, until the coming of Moshiach Tzidkeinu, the building of our Beis Hamikdash, and celebrating Pesach with all of Israel according to halacha. Writing and signing with love and joy, in my name and in the name of all the rabbonim members of Agudas HaRabbonim. Moshe Feinstein."  — Letter from Rosh Chodesh Nissan 1977</blockquote>Towards the Rebbe's 80th birthday on 11 Nissan 1982, Rabbi Feinstein wrote a letter of blessing expressing his admiration and friendship for the Rebbe:<blockquote>"Regarding my dear friend, His Honor the holy Gaon and Tzaddik, the Rebbe Menachem Mendel Schneerson shlita of Lubavitch, it is known throughout the world about his genius in Torah and how he is truly a great worker in Torah with genius, that he constantly works in Torah and is truly a master of Torah... During the years that I have known the Rebbe shlita, our connection has been one of great friendship, I had several opportunities to discuss complex matters with him both in nigleh and nistar, and I always considered him according to his great stature and genius... who has sanctified himself to enter fully into spreading Torah throughout the world, to both small and great in Klal Yisrael together, and truly works with genius in the matter of spreading Torah. And it is evident that all his work is in this... in all his many activities, both public and personal. And this I wanted to mention that this is truly the greatest praise, and it is the praise that was given to all the great ones of the world throughout all the years, that they were primarily in Torah... Therefore I join in the celebration of what has been accepted throughout the entire world, that there is great joy that Hashem has lengthened his days to the age of eighty. And it is not enough to simply bless him with long life and years, for today this blessing is not sufficient, as we hope that Melech HaMoshiach will come immediately and soon, and then the Rebbe shlita will merit to work forever in Torah and yiras shamayim... And we bless that my friend the Rebbe shlita should merit this longevity, and that all of Klal Yisrael should merit the complete geulah soon together with the Rebbe shlita." 

— "Vayehi BiYeshurun Melech", 1982</blockquote>A year later, in 1983, he wrote as president of Agudas HaRabbonim:<blockquote>"His Honor our friend and friend of all Israel, the Gaon and Tzaddik our teacher Rabbi Menachem Mendel Schneerson shlita, the Rebbe of Lubavitch. We come hereby in our name and in the name of all the rabbonim members of Agudas HaRabbonim, to bless His Holy Torah Honor upon reaching the age of eighty-one, through Hashem's kindness upon him and upon all Israel who need his Torah Honor and the Torah scholars. May Hashem lengthen the days and years of his Torah Honor with vigorous and fresh life for his influence on Israel with even greater strength and power, and may he lead his leadership for the benefit of Klal Yisrael and the honor of Heaven until Shiloh comes. Writing and signing in our name and in the name of all the rabbonim members of Agudas HaRabbonim. Moshe Feinstein, President."</blockquote>In the Library of Agudas Chassidei Chabad there are several of Rabbi Feinstein's seforim with dedications for the Rebbe from the author:

On the sefer "Dibros Moshe" on Masechta Bava Basra he wrote: "To His Honor the Rebbe of Lubavitch shlita, a gift from the author, and with blessing that Hashem should lengthen his leadership until the coming of Moshiach. Moshe Feinstein 15 Marcheshvan 1969." On the "Dibros Moshe" of Masechta Shabbos he wrote: "With Hashem's help. To His Honor my friend the Gaon and Tzaddik Rabbi M.M. shlita Rebbe of Lubavitch, may Hashem raise his horn until the coming of the righteous redeemer. The author Moshe Feinstein. 2 Rosh Chodesh Adar 1972." On the "Dibros Moshe" on Masechta Yevamos, he wrote: "With Hashem's help, with blessing to His Honor the Gaon Maharamash the Rebbe of Lubavitch shlita, may his throne be elevated until the coming of Melech HaMoshiach soon. The author Moshe Feinstein. 13 Tammuz 1980."

Rabbi Feinstein also wrote a haskama for the sefer Yechi HaMelech written by Rabbi Sholom Dovber Wolpo, on studies in the Rambam's Laws of Kings.