Familial letter. There is a list of sources on the reverse, apparently preparation for a sermon.
Rabbi Pinchas Chaim Klein was the son of Rabbi Shmuel Shmelke Klein, rabbi of Selish. He studied under the Ktav Sofer, and succeeded his father as rabbi of the city in 1875. He passed away in 1923. He was related through marriage to Rabbi Yosef Nechemiah Kornitzer, rabbi of Krakow.
Rabbi Moshe Chaim HaLevi Litsch-Rosenbaum was the rabbi of Kleinwardein beginning in 1897. When he wrote this letter in 1891, he was serving as rabbi of Şimleu. He authored Lechem Rav, Livyat Chen and more.
[1] leaf. Ink on paper. 17×21 cm. Fine condition. Light tears without loss.