A community arboretum of human history

Knowledge that branches, blooms,
and is tended by many hands.

historygrapher.net is the public garden of the historygrapher ecosystem — where educators, students, and curious gardeners cultivate timelines together. Every era a branch. Every event a leaf. Every reader a contributor.

  • 4,182public timelines
  • 61,309events catalogued
  • 238schools using us

The Feature Spread

Editor-tended timelines, planted with care and footnoted twice.

Featured Public Timeline · Curated by the editors

The Long Echo: How the Mediterranean became an idea

A two-millennia walking tour through ports, parchment, and the grain ships that bound a sea into a culture. From Punic harbours to Genoese banking houses to the Suez packet steamers, this timeline traces how trade routes thicken into ideas, and how ideas flower into republics, empires, and the slow, surprising notion of Europe itself. Three hundred and twelve events, eighty-one cross-references, and a sidebar of recipes.

Walk this timeline →

Featured Public Timeline · Reader's choice, March

Quiet Revolutions: A century of looms, ledgers, and lit windows

Industrial change told not through the great factory but through small, stubborn rooms: a Lyon weaver's diary, a Manchester ledger, a Quebec rectory window lit late. This timeline gathers ninety-three modest documents and threads them into one hundred and seventy events, showing how the loud nineteenth century was actually a chorus of quiet decisions, daily, in kitchens. Includes a printable wall map.

Walk this timeline →

The Community Garden

Timelines from the volunteer gardeners — teachers, students, hobbyists, archivists.

Cultural · Music

Songbooks of the Volga: 200 years of folk transcriptions

A chronological scrapbook tracing how nineteenth-century ethnographers, twentieth-century radio archivists, and present-day grandmothers each preserved the same lullaby differently.

Anya Volkonskaya · 84 events

Local · Civic

Every street in Kyoto’s Higashiyama, dated by its oldest sign

A walking timeline assembled by a retired postman who photographed every wooden shop sign, then dated each by character style, lacquer, and a friendly ceramicist's verdict.

Hiroshi Tanabe · 312 events

Science · Letters

Correspondence of the Curies, plotted as a network

Eleven hundred letters, plotted on a timeline cross-referenced with a node graph. Click any letter to see who else was writing about the same idea that week.

María Solano · 1,103 events

Education · Classroom

Year-7 World History: a remixable timeline for teachers

An openly licensed scaffold timeline written by a London teacher and forked 41 times by colleagues across three continents. Comes with worksheets and vocabulary cards.

Mr. Ade Adekoya · 96 events

Maritime · Trade

The pepper trade told from the kitchen, not the deck

Each event is a recipe. The timeline is six hundred years of how pepper moved, but read through soup pots, sausage casings, and a single Genoese cookbook.

Cosima Ricci · 220 events

Archaeology · Open data

Carbon-dated finds from the Niger inland delta, 200 BCE–1500 CE

A dataset, an interpretation, and a generous footnote habit. Built by a graduate seminar that decided to publish their working notes openly.

Aminata Diallo & seminar · 438 events

Family · Memoir

Four generations on one farm in Saskatchewan

Diaries, weather logs, ration coupons, and a granddaughter's careful transcription. The timeline reads like a slow novel; many readers say so in the comments.

Cheryl Bouchard-Wei · 62 events

Architecture

A church in Cordoba, restored eleven times

Each restoration is photographed, dated, and footnoted. The timeline tracks not only what was repaired but who paid, who decided, and what the local bishop wrote about it.

Salvador Martínez · 177 events

Linguistic

When did "thou" disappear? A timeline of pronouns in dialect

Mapped against parish registers and the OED, this timeline charts the slow retreat of an English pronoun from the south to the north, region by region.

Beatrice Hardiman · 203 events

Public health

A century of cholera in one Calcutta neighbourhood

Built from municipal water records, hospital intake books, and a 1907 newspaper’s "letters to the doctor" column. Distressing and clarifying in equal measure.

Dr. Ranjit Sen · 512 events

Polar · Exploration

Every ship that wintered above 78°N, plotted by month

A maritime timeline obsessively cross-referenced against wind diaries, ice charts, and the meals served on board (on the better-equipped vessels, anyway).

Eirik Brekke · 128 events

From the Gardener’s Journal

Editorial notes from the historygrapher community on craft, sources, and slow research.

In which a librarian in Aleppo, an undergraduate in Mexico City, and a retired postman in Kyoto each contribute to the same timeline about wooden shop signs — without ever meeting — and in doing so demonstrate something we keep forgetting: that history, properly tended, is not a monologue from a single authoritative voice but a slow, polyphonic conversation across rooms, languages, and decades. The shop sign timeline began as a folder of three hundred photographs. It is now, eight months later, a working reference for two universities and a documentary film team. Nobody in particular is in charge. Everybody, in particular, is responsible.

We have spent a year asking what makes timelines feel alive, rather than entombed. The honest answer, after all this gardening, is also botanical: living things require tending. They need water (sources), light (curiosity), pruning (editing), and the occasional re-potting (when a project outgrows its original frame). We have built historygrapher.net to make that tending feasible at the scale of a community. None of this is automatic. None of it is finished. All of it is in season.

Plant a timeline

Bring your research into the garden.

If you have a body of work — a thesis, a parish register transcription, a family archive, a class project — we will help you turn it into a public timeline with proper footnotes, peer review, and a permanent home.