Alter, Avraham Mordekhai. Osef mikhtavim u-devarim. - Hotsaʼah meḥudeshet. - Jerusalem : [s.n.], 727 [1966 or 1967] - 106 p. : facsims. ; 22 cm. Hebrew or Yiddish. LCCN: he 68002695 Subjects--Corporate Names: Agudat Israel. Subjects--Topical Terms: Orthodox Judaism--Poland LC Class. No.: BM337 / .A63