The Victorian Indexer's Ghost: On the Invisible Scaffolding of Thought

I have been thinking about a figure who haunts the pre-digital stacks of every major library, a man whose work we likely touch every day without ever knowing his name: Robert Collison. A professional indexer and librarian in mid-20th century London, Collison was one of the quiet architects of how we organize and connect information. Long before the first hyperlink was ever clicked, he understood that the value of a body of knowledge lies not just in its contents, but in the invisible scaffolding that allows you to move between them.

Collison’s world was one of printed encyclopedias and reference books, vast edifices of text where a fact was only as accessible as its entry point. His job was to build the back doors, the secret passages, the carefully worded signs that said “See also.” In his 1959 book, Indexes and Indexing, he didn’t just offer technical advice; he laid out a philosophy. An index, he argued, is not a mere list. It is a “systematic guide,” a dynamic map of relationships. It anticipates the user’s wandering mind, their forgotten term, their tangential curiosity. A reader looking for “steam engine” might be gently guided to “Newcomen, Thomas” and from there, perhaps, to the “Industrial Revolution.” This was manual, thoughtful, internal linking.

We build our websites with the same fundamental challenge. Every page is a potential dead end unless we provide the paths forward and the paths back. The modern equivalent of Collison’s “See also” is the contextual internal link. But in our rush to populate our sites, we often treat these links as afterthoughts—random signposts tossed along the roadside rather than part of a coherent system of ways and means. We forget that a user might enter through a side door, via a deep link to a specific product or article, and that our site’s structure must be robust and intuitive enough to offer them a world of context, not just a single room.

The Canonical as the Defined Entry

Collison’s indexing also grappled with a problem we now solve with the canonical link tag: synonyms and multiple points of entry. What does one do when a single concept is known by several names? In an index, he would make a choice. The main entry would be under the most recognized term, and the others would contain a simple directive: “Steam locomotive. See Locomotive, steam.” This is the print-world canonical tag. It consolidates authority, reduces redundancy, and tells both the reader and the future editor, “This is the primary place for this topic.” It’s a declaration of a single source of truth, an agreement on the official address for an idea.

When we neglect this discipline online, we create the digital equivalent of a library where the same book is filed under three different Dewey Decimal numbers. Search engines become confused, link equity is diluted, and users are fractured across near-identical pages. Collison’s meticulous cross-referencing was a form of what we now call crawl budget optimization, ensuring that the seeker’s energy was not wasted. He was, in essence, preventing 404 errors of the mind.

It’s easy to see our work with URLs and site architecture as a cold, technical discipline. But the ghost of Robert Collison reminds us that it is, and has always been, a deeply humanistic one. It is about empathy for the person lost in the information maze. It is about building not just a collection of pages, but a coherent, navigable world. The next time you thoughtfully place an internal link or define a canonical URL, think of the Victorian indexer, leaning over a galley proof, carefully inscribing a pathway for a future reader he would never meet. We are simply continuing his work, building the invisible scaffolding for a new library of Babel.

Notes & further reading

A few pages I came back to while writing this: