. . "WL3000/9/1/1146" . . "This material has been digitised. Readers should book a reading room terminal to access it."@en . "US citizen Henry John Richter was a relative by marriage of The Wiener Library librarian."@en . . . "Correspondence with Richter, John Henry"@en . "19 letters"@en . . . . . "Correspondence regarding personal matters, a request for material on deportations of Jews, and an offer of certain materials."@en .