Three letters of responses in Halacha in the handwriting and signature of Rabbi Chaim Shaul Greineman.
Letters concerning the Mitzvot of Bikurim - Kislev 1979, the definition of what is called "linen" - Tevet 1975, "The multiple annoyances are here that prevent me from the measure of promptness to answer as soon as possible..." - Letter on the matter of taking the blood of the bull - Elul 1975.
HaGaon Rabbi Chaim Shaul Greineman [1926-2015], was the nephew of Maran the Chazon Ish, among the heads of "Chazon Ish" faction, and author of the series Chiddushim U'Biurim on the Talmud.