1. Add MS 88942/4/1/21 Reference (shelfmark): Add MS 88942/4/1/21 Title: Talbot: Material concerning other patents Scope & Content: ‘Camera Obscura. Improvements in Berry’s Specification. 10.’ (14 August, 1839). Handwritten text, pages 1-24 with a blank back page and a single page of printed illustrations of the process. National Trust Accession: 35293. Collection Area: Western Manuscripts Languages: English Date Range: 1839 Extent: 1 file