71. LKA3.6 Reference (shelfmark): LKA3.6 Title: The language of animals - 3. From Guinea-pigs to Seals Scope & Content: Script and various drafts Collection Area: Sound Archive Languages: English Date Range: 1954 Extent: 21 folios
72. LKA2.3 Reference (shelfmark): LKA2.3 Title: Bird Man - A radio tribute on Koch's 70th birthday (2 copies) Scope & Content: Draft and final script Collection Area: Sound Archive Languages: English Date Range: 1951 Extent: 29 folios
73. LKA11.4 Reference (shelfmark): LKA11.4 Title: Notes on bird species and Koch's recordings of them Scope & Content: Notes and typed drafts [English]. Undated document(s) Collection Area: Sound Archive Languages: English Date Range: Mid 20th century Extent: 41 folios
74. LKA10.3 Reference (shelfmark): LKA10.3 Title: La langage des animaux - La periode de la rotte de cerf sauvage [Rutting season of wild stags] Scope & Content: Draft scripts Collection Area: Sound Archive Languages: French Date Range: 1951 Extent: 7 folios