Colour-coded geological map of part of south-east Fife and north East Lothian, from a survey of or prior to 1861 by Henry Hyatt Howell as part of the Geological Survey of Great Britain.

Colour-coded geological map of eastern Perthshire and part of Fife, from a survey of or prior to 1883 by James Geikie, Henry Hyatt Howell, Benjamin Neeve Peach and John Young as part of the Geological Survey of Great Britain.

Colour-coded geological map of south-east Angus and north-east Fife, from a survey in 1884 by James Geikie, Henry Hyatt Howell and HM Skae as part of the Geological Survey of Great Britain.

Colour-coded geological map of part of south-east Angus and north-east Fife, from a survey of or prior to 1884 by James Geikie and Henry Hyatt Howell as part of the Geological Survey of Great Britain.