LDGSL/947/5/1/1
'Geological Map of England and Wales': production costs
1814-1821
LDGSL/947/5/1/4
'Geological Map of England and Wales' - earliest surviving proof [1816]
[1816]
LDGSL/947/5/1/5
'Geological Map of England and Wales' - proof [1817]
[1817]
LDGSL/947/5/1/6
'Geological Map of England and Wales' - uncorrected proof before mountains [?1818]
[Apr-May 1818]
LDGSL/947/5/1/7
'Geological Map of England and Wales' - corrected proof before mountains [1818]
[May 1818]