1. LKB1 Reference (shelfmark): LKB1 Title: Correspondence from family and friends Scope & Content: Correspondence from family and friends including letters and cards, and some brochures Collection Area: Sound Archive Languages: English and German Date Range: Mid 20th century Extent: 67 folios and 18 items
2. 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