Perkoff, Isaac Letters to Gaster from Isaac Perkoff, of the firm I. Perkoff & Son, portrait painters and photographers, on a range of business and personal matters, such as asking for Gaster's permission to photograph Montefiore College; discussing a girl looking for work as a photographer; asking Gaster for a letter of introduction to a rabbi in Berlin on behalf of his daughter Rebecca and her fiance Moise Chain, and subsequently thanking him for the letter to L. Baeck. 1895-1924