Cartographic History · c. 1680–1780
A century of cartographic ambition, territorial claim, and geopolitical resolution — told through the maps that made the argument.
Maps were not neutral records. They were instruments of empire — staking claims, asserting boundaries, and justifying campaigns across an unsettled continent.
Explore the frameworkThese maps are not merely geographic documents — they are instruments of imperial argument. Each one staked a claim, asserted a boundary, or justified a campaign. Collected together, they narrate a story visible at a glance: the rise of French ambition, the collision of empires across the Ohio Valley, and the British resolution that reshaped a continent.
Maps asserting French territorial claims over the Mississippi basin and Great Lakes. Cartographically bold, often geographically speculative — produced at the height of Louis XIV's imperial ambitions and the speculative frenzy of John Law's Mississippi schemes.
Tone: Expansionist confidence
Maps of the contested interior — the Ohio Valley and Great Lakes as British and French claims collide. The period of maximum cartographic tension, where every line drawn was a political act and every map a piece of propaganda.
Tone: Conflict and propaganda
Post-Seven Years' War maps codifying British dominance. The Proclamation Line, reorganized colonies, ceded territories. Maps that assert imperial will even as revolutionary tensions build — the cartographic denial of what would become the United States.
Tone: Imperial consolidation
Henri Abraham Chatelain
1719 · Amsterdam
Published for Chatelain's Atlas Historique at the height of French imperial ambition, this map presents French claims across the continent with confident totality — from the St. Lawrence to the Gulf of Mexico, connected by rivers and alliances. The reference to the Compagnie Françoise d'Occident places it in the feverish moment of John Law's Mississippi Bubble, one of history's most dramatic financial collapses. An Act I anchor: expansionist, speculative, and visually commanding.
Act II · c. 1740
Emanuel Bowen
c. 1740 · London
Produced on the eve of the French and Indian War, this map centres on the Atlantic Ocean and makes British imperial claim its explicit subject. Yellow outlining identifies territories "now possessed by the King of Great Britain" — the American colonies, Caribbean islands, and trading posts across Africa and Asia. Green marks former British possessions. The Atlantic is framed as a British lake. Published at the moment of maximum tension before open conflict, it is an Act II document in the most precise sense: a statement of what Britain believed it owned, and what it was prepared to defend.
Act III · 1763
John Gibson · The Gentleman's Magazine
1763 · London
Published to accompany the Royal Proclamation of October 7, 1763 — one of the most consequential policy documents in British colonial history — this map codifies Britain's victory over France in visual form. The vast territory labeled "LANDS RESERVED for the INDIANS" marks the Proclamation Line that would become a major source of colonial resentment. An Act III anchor: the moment of British resolution, and the seed of revolution.
A private collection and ongoing research project exploring what maps reveal about power, ambition, and the contested making of North America.
Holocene Maps began with a simple observation: the maps produced between 1680 and 1780 are among the most politically charged objects in the history of cartography. These were not neutral records of geography. They were arguments — staking claims, asserting sovereignty, and imagining territories that their makers had often never seen.
The collection is organised around a three-act historical argument: French imperial confidence, the collision of empires across the contested interior, and the British resolution that followed the Seven Years' War. Each piece is selected for its ability to advance that argument visually — to communicate its historical moment at a glance, without requiring specialist knowledge.
This site is an attempt to share that argument with other enthusiasts — collectors, historians, students, and anyone drawn to the idea that a map can be read like a political document. The annotations, the framework, and the commentary are all works in progress. Contributions and corrections are welcome.
Recommended reading: Fred Anderson's Crucible of War and J.B. Harley's The New Nature of Maps — the two books that most shaped how this collection thinks about cartography as argument.
Fortune · 1939
Richard Edes Harrison
July 1939 · Fortune Magazine
One of the most celebrated American maps of the twentieth century, Harrison's aerial perspective of New York City appeared as a supplement to Fortune Magazine in July 1939. Harrison's signature oblique projection — presenting the city as if seen from an aircraft — was revolutionary at the time and would go on to define wartime cartography in American media. A landmark of mid-century graphic design as much as cartography.
Texas · 1909
Poole Brothers · The Texas Realty Journal
1909 · Houston, Texas
A railroad promotion map published by Poole Brothers for The Texas Realty Journal, advertising round-trip homeseeker rates on the Iron Mountain Route. The map annotates the state by agricultural product and land use — cotton, corn, cattle, oil fields — making it as much an economic argument as a geographic document. A vivid artifact of the era's land promotion culture and westward settlement push.