Letter by Rabbi Ya'akov Kaminetsky

Interesting letter signed by Rabbi Ya'akov Kaminetsky, to Rabbi Dr. Yehuda Levi. Monsey, Nisan 1980.
In the letter, Rabbi Ya'akov Kaminetsky praises Rabbi Levi's book "Shev Shemateta B'Talmud Torah [the early edition of Sha'arei Talmud Torah], and he writes that "I have looked through the book… and he has done a very great thing by compiling many of the words of Chazal, Rishonim and Achronim, on several important treatises on the subject of Talmud Torah…". In the margins, Rabbi Ya'akov adds four lines in his handwriting with blessings for a kosher happy Chag, in honor of Passover. The letter was printed as an approbation for Rabbi Levi's book.
The recipient is Rabbi Dr. Yehuda Lev Levi, physicist, educator and author. Among other things, he studied from Rabbi Yitzchak Hutner and from Rabbi Ya'akov Kaminetsky. He served as deputy president of Agudat Yisrael and as president of the association of Torah observant scientists in the US. He moved to Israel and headed Machon Lev in Jerusalem. One of his books, Sha'arei Talmud Torah, printed in 1981, was banned by Rabbi Shach and by Rabbi Kanievsky (the Steipler) but he was supported by American rabbis, among them Rabbi Kaminetsky as apparent from this letter.
Official stationery, approximately 27 cm. Typewritten and signed by hand. Additions and corrections in his handwriting. Very good condition + an envelope (the address is handwritten by Rabbi Kaminetsky).