Letter and Notebook of Torah Novellae by Rabbi Pesach Pruskin (of Kobryn)

Interesting autograph letter signed by Rabbi Pesach Pruskin. Mstsislaw, Nissan 1914.
Enclosed is a notebook (13 handwritten pages): scribal copy of his discourses on Tractate Gittin, Torah novellae on the laws of berera (selecting on Shabbat).
Sent to Rabbi Elchanan Gumpertz, a Hamburg rabbi (see Item 245), requesting help for his yeshiva. At the beginning of the letter, he blesses him with a "kosher and happy chag" and writes: "…Together with this, please accept my gift of Torah novellae which I have lectured in the yeshiva while studying Tractate Gittin on the laws of berera".
Rabbi Pesach Pruskin (1879-1940), among the greatest deans of Lithuanian yeshivas. In his youth, he was sent with another 13 students (HaYad HaChazaka) by the Saba of Slabodka to establish the yeshiva in Slutzk headed by Rabbi Isser Zalman Meltzer. After his marriage, Rabbi Meltzer appointed him lecturer and mashgiach. In 1908, he moved to Shklow and he established his yeshiva initially composed of six close disciples who followed him from Slutzk to Shklow, among them Rabbi Moshe Feinstein, author of Igrot Moshe. In 1912, he was appointed rabbi in Mstsislaw by the recommendation of Rabbi Chaim of Brisk and of the Chafetz Chaim. In 1924, after World War I, he served in the Kobryn rabbinate and established his yeshiva which eventually became one of the most renowned yeshiva in Lithuania. These novellae were not printed, however some of the teachings can be found in his books.
Official stationery, 28 cm. 12 handwritten lines. Good condition + handwritten notebook, 13 written pages, 21.5 cm. good condition.