21. LKA6.9 Reference (shelfmark): LKA6.9 Title: The naturalist Scope & Content: Various drafts Collection Area: Sound Archive Languages: English Date Range: 1964 Extent: 22 folios
22. LKC5 Reference (shelfmark): LKC5 Title: Newspapers cuttings Scope & Content: Loose newspapers and press cuttings, arranged chronologically Collection Area: Sound Archive Languages: English Date Range: 1963-1964 Extent: Approximately 100 folios
23. LKA2.1 Reference (shelfmark): LKA2.1 Title: Mother and child Collection Area: Sound Archive Languages: English Date Range: [1951] Extent: 3 folios
24. LKA4.3 Reference (shelfmark): LKA4.3 Title: Songbirds as primadonnas Scope & Content: Draft Collection Area: Sound Archive Languages: English Date Range: [1956] Extent: 3 folios
25. LKH5 Reference (shelfmark): LKH5 Title: Drawing Scope & Content: Drawing presented to Ludwig and Nelly Koch by Dora Neuinous Collection Area: Sound Archive Languages: English Date Range: c 1952 Extent: 3 folios
26. LKF6 Reference (shelfmark): LKF6 Title: Bio-Acoustics Bulletin Scope & Content: 1961, 1962, 1963 Collection Area: Sound Archive Languages: English Date Range: 1961-1963 Extent: 3 volumes
27. LKE1 Reference (shelfmark): LKE1 Title: Small notebook Scope & Content: Small pink notebook, containing handwritten notes made by Koch during recordings, and expenses Collection Area: Sound Archive Languages: English Date Range: c 1942-1956 Extent: 1 volume
28. LKE4 Reference (shelfmark): LKE4 Title: Loose notes Scope & Content: Loose papers including addresses of contacts, Koch's notes to himself, drawings of equipment, maps, tickets and reciepts. Mostly appear to relate to trip to Iceland Collection Area: Sound Archive Languages: English Date Range: 1950s Extent: Approximately 125 folios
29. LKA13 Reference (shelfmark): LKA13 Title: Misc vol. II Scope & Content: Articles, correspondence, lists of Paris noises, sounds, news cuttings. Undated document(s) Collection Area: Sound Archive Languages: English Date Range: Mid 20th century Extent: Approximately 200 folios
30. LKB2 Reference (shelfmark): LKB2 Title: Letters from Koch Scope & Content: Correspondence to colleagues, family and the BBC Collection Area: Sound Archive Languages: English and German Date Range: 1953-1963 Extent: 77 folios