"Helga Kämpfe was a teacher at Christopherus Haus, an international and confessional independent hall founded in Hamburg in 1952."@en . "This material has been digitised. Readers should book a reading room terminal to access it."@en . . . . . . "A thank you note by Kämpfe to Alfred Wiener for giving a talk at the Christopherus Haus Hamburg."@en . "2 letters"@en . . "WL3000/9/1/740" . "Correspondence with Kämpfe, Helga"@en . . . .