31. LKD2 Reference (shelfmark): LKD2 Title: Photographs mounted onto paper Scope & Content: Photographs mounted onto sheets of paper, of Koch working in the field and of the sound van used. Some undated documents Collection Area: Sound Archive Languages: Not applicable Date Range: 1940s Extent: 7 photographs
32. LKD3 Reference (shelfmark): LKD3 Title: Animals Scope & Content: Photographs of animals taken in the field (ducks, birds, swans etc.), as well as photographs of Koch and associates working. Undated document(s) Collection Area: Sound Archive Languages: Not applicable Date Range: Mid 20th century Extent: 17 photographs
33. LKD4 Reference (shelfmark): LKD4 Title: Animal identification photographs Scope & Content: Photographs of animals, possibly taken from books, with identification of each species, also some photographs of Koch and sound van at work. Undated document(s) Collection Area: Sound Archive Languages: Not applicable Date Range: Mid 20th century Extent: 37 photographs
34. LKD5 Reference (shelfmark): LKD5 Title: Picture Post photographs Scope & Content: Copies of photographs taken for picture post magazine which were not then used, appearing to show an organised expedition Collection Area: Sound Archive Languages: Not applicable Date Range: 1946 Extent: 11 photographs
35. LKD6 Reference (shelfmark): LKD6 Title: Pictorial Press photographs Scope & Content: Photographs of Koch at work in a bay and in his sound van. Undated document(s) Collection Area: Sound Archive Languages: Not applicable Date Range: Mid 20th century Extent: 12 photographs
36. LKD7 Reference (shelfmark): LKD7 Title: Dinard photographs Scope & Content: Envelope of small photos showing scenes in France, with titles on the reverse (in French). Undated document(s) Collection Area: Sound Archive Languages: Not applicable Date Range: Mid 20th century Extent: 7 photographs
37. LKD8 Reference (shelfmark): LKD8 Title: Iceland photographs Scope & Content: Photographs and postcards from Koch's trip to Iceland Collection Area: Sound Archive Languages: Not applicable Date Range: 1950s Extent: 30 photographs
38. LKD9 Reference (shelfmark): LKD9 Title: Nitrate negatives Scope & Content: Kodak nitrate negatives of animal photographs. Undated document(s) Collection Area: Sound Archive Languages: Not applicable Date Range: Mid 20th century Extent: 19 negatives
39. LKD10 Reference (shelfmark): LKD10 Title: Possible use photographs Scope & Content: Photographs from an envelope entitled 'Koch photos etc. for possible use' - mostly of Koch at work recording. Undated document(s) Collection Area: Sound Archive Languages: Not applicable Date Range: Mid 20th century Extent: 7 photographs
40. LKD11 Reference (shelfmark): LKD11 Title: Glass negative slides in Elliott & Sons box Scope & Content: Glass slides of a cat on recording equipment and the parlophone recording van [No titles given]. Undated document(s) Collection Area: Sound Archive Languages: Not applicable Date Range: Mid 20th century Extent: 3 slides