1. LKB Reference (shelfmark): LKB Title: Correspondence Scope & Content: Correspondence with family, friends, colleagues and publishers. Some undated documents Collection Area: Sound Archive Languages: English and German Date Range: Mid 20th century Extent: 7 files
2. LKH Reference (shelfmark): LKH Title: Other material Scope & Content: Sound library catalogues, some artwork and financial papers. Some undated documents Collection Area: Sound Archive Languages: English and German Date Range: 1941-1963 Extent: 6 files
3. LKA Reference (shelfmark): LKA Title: Broadcasting Scripts Scope & Content: Drafts, scripts and correspondence for broadcast programmes by Ludwig Koch Collection Area: Sound Archive Languages: English, French, and German Date Range: 1939-1964 Extent: 13 files
4. LKD Reference (shelfmark): LKD Title: Photographic material Scope & Content: Photographs and glass negatives of people, research, work and animals Collection Area: Sound Archive Languages: Not applicable Date Range: 1930s-1950s Extent: 17 files containing 181 photographs, 19 negatives, 20 slides
5. LKC Reference (shelfmark): LKC Title: Press and Publicity Scope & Content: Magazines, newspapers and press cuttings by Koch or relating to his work, and other interests, in English and German Collection Area: Sound Archive Languages: English and German Date Range: 1931-1966 Extent: 9 files
6. LKE Reference (shelfmark): LKE Title: Notes, lectures and awards Scope & Content: Notebooks, notes, lecture notes, and certificate awarding Koch the grand cross of merit. Some undated documents Collection Area: Sound Archive Languages: English Date Range: 1936-1962 Extent: 7 files
7. LKG Reference (shelfmark): LKG Title: Books and Publications Scope & Content: Books and drafts worked on by Koch, including background material for soundbooks. Some undated documents Collection Area: Sound Archive Languages: English and German Date Range: 1935-1955 Extent: 9 files
8. LKF Reference (shelfmark): LKF Title: Journals, Magazines and Brochures collected by Koch Scope & Content: Nature-related and other journals, magazines, annual reports, tourism brochures, leaflets and programmes, and record sleeve notes. Some undated documents Collection Area: Sound Archive Languages: English, French, and German Date Range: 1941-1988 Extent: 21 files containing 105 volumes