"31 letters"@en . . . . "WL3000/9/1/1084" . . . . "Correspondence regarding the consignment of various published and published materials by Perls, including some circulars from Chile and information material on Stettin. Contained are several transcripts from published newspaper or magazine articles."@en . . "Correspondence with Perls, Max"@en . "This material has been digitised. Readers should book a reading room terminal to access it."@en . . . .