Creator: William Smith (1769-1839) [original]
Description: Photograph of William Smith’s ‘General map of strata found in England & Wales’, taken under infrared light.
Infrared light is used to show up ink marks on faded documents. The original map hung in the library until c.1980s. Light has faded the colouring and base map, which is further exacerbated by its frequent varnishing over the years.
Date: 1801 & 1972
Format: Black and white glass plate negative
Archive reference: LDGSL/740 [original]
Image reference: 07-141
Recommended print size: Up to A4 (30 x 20cm)