This work is built on four years of meticulous research at national archives in Dublin, London, and Belfast and at the Military Archives in Dublin and the Ordnance Survey’s archives at Phoenix Park. The research is enriched by personal interviews and the narratives of those directly involved in this remarkable journey. A list of these sources and a bibliography will appear here:

Andrews, J. H.
“A Paper Landscape, The Ordnance Survey in Nineteenth-Century Ireland”
Oxford at the Clarendon Press, 1975.

Andrews, J. H.
“Shapes of Ireland. Maps and their makers 1564–1839”
Geography Publications, 1997.

Berggren and Jones
“Ptolemy’s Geography: An Annotated Translation of the Theoretical Chapters”
Princeton University Press, 2000.

Borre, Kai
“Fundamental triangulation networks in Denmark”
Journal of Geodetic Science, 2014, 4:74–86.

Close, Colonel Sir Charles
“The Early Years of the Ordnance Survey”
Institution of Royal Engineers, 1926.

Crane, Nicholas
“Latitude. The Astonishing Adventure that Shaped the World”
Penguin Random House, 2021.

The Economist
“The Economist Style Guide”
The Economist, 2005.

Grann, David
“The Wager”
Simon & Schuster, 2023.

Haasbroek, N. D.
‘Libellus de locorum describendorum ratione’, as translated from Latin, via Dutch, in
“Gemma Frisius, Tycho Brahe and Snellius and their triangulations”
Rijkscommissie Voor Geodesie, Kanaalweg 4, Delft, Netherlands, 1968.

Haasbroek, N. D.
“Gemma Frisius, Tycho Brahe and Snellius and their triangulations”
Rijkscommissie Voor Geodesie, Kanaalweg 4, Delft, Netherlands, 1968.

Kirwan, Richard
“If Maps Could Speak”
Londubh Books, 2010.

Owen, Tim, and Elaine Pillbeam
“Ordnance Survey: Mapmaker to Britain since 1791”
Ordnance Survey, 1992.

Seymour, W. A. (ed.)
“A History of the Ordnance Survey”
Dawson, 1980.

Smith, Adam (1776).

An Inquiry into the Nature and Causes of the Wealth of Nations. Book I, Chapter I, “Of the Division of Labour.”

Sobel, Dava
“Longitude: The True Story of a Lone Genius Who Solved the Greatest Scientific Problem of His Time”
Fourth Estate, London, 1998.

Wainwright, Alfred
“The Eastern Fells”
Frances Lincoln, 2009 Special Edition.