. "Correspondence with Koehler & Volckmar"@en . "WL3000/9/1/787" . . . . . . . "Correspondence regarding order, dispatch, receipt, and payment issues of published material."@en . "The Stuttgart based Koehler & Volckmar AG (now Koch, Neff und Volckmar) is a German book trader."@en . . . "This material has been digitised. Readers should book a reading room terminal to access it."@en . "19 letters"@en .