Blumenthal, C. E. B. Letters from C. E. B. (Ernst) Blumenthal to Gaster; one includes a letter of introduction from Dr Alexander Haggerty Krappe, who had suggested that Blumenthal could ask Gaster's advice on some questions; the second letter thanks Gaster for his earlier advice, and encloses an article he published in the Cambridge Review titled "What Can History Teach Us?" 1937-1938