Corby

1815

Bourn (Hills) - OS One-Inch Revised New Series

1898

Ordnance Survey

1:63k

Bourn (Outline) - OS One-Inch Revised New Series

1898

Ordnance Survey

1:63k

143 Bourn (Hills)

1899

Ordnance Survey Office

1:63k

70. Sleaford.

1886

Great Britain, Ordnance Survey Office

1:63k

Grantham 24

1814

Grantham (Hills) - OS One-Inch Revised New Series

1898

Ordnance Survey

1:63k

Grantham (Outline) - OS One-Inch Revised New Series

1898

Ordnance Survey

1:63k

127 Grantham (Hills)

1899

Ordnance Survey Office

1:63k

Ancaster

1814