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The Marginalia.

Reportage · № 14 · Summer 2026

The Mud Angels of the Biblioteca

In 1966 the Arno drowned a million books in Florence. The volunteers who dug them out found something in the margins that the flood could not dissolve.

The river reached the reading room a little after seven, moving at the pace of a man walking quickly. It came in the dark of the fourth of November, carrying diesel from ruptured heating tanks and the topsoil of half of Tuscany, and by the time it slowed, the Biblioteca Nazionale Centrale — the deepest shelf of Italy’s memory — stood in six meters of it. A million volumes were underwater. Magliabechi’s own library, the seed of the whole collection, sat in the basement stacks, closest to the river the old collector had loved to walk beside.

What happened next is the part everyone knows, or half-knows: the students came. They came from Florence first and then from everywhere, sleeping in train stations, forming chains through the flooded stacks, passing books hand over hand out of the dark like buckets from a well that had inverted itself. The newspapers called them angels of the mud, and the name stuck because it was accurate in the way names rarely are — they were unqualified, uninsured, and mostly unnamed, and they saved the better part of a civilization’s marginalia before anyone had decided whether it was worth saving.

That last clause is the story I went to Florence to chase. Because the flood posed, with the bluntness only disasters manage, a question libraries had politely deferred for five centuries: when a book is drowning, what exactly are you saving? The text existed elsewhere — in other copies, other editions. What existed nowhere else was the handwriting in the margins: the arguments, the corrections, the shopping lists, the sixteenth-century reader who wrote no, no, no beside a passage of Aristotle and, forty pages on, a small, defeated . The mud angels, passing volumes up out of the water, were not rescuing literature. They were rescuing readers — the evidence that any of it had ever been read.

Tomás Aguirre reports on archives and their weather. His last piece for this magazine followed a shipment of microfilm across three borders.