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Evidence first. Wonder always.

Investigations

Explore remarkable places and ingenious technologies through the evidence that remains. Each Sepia Jade investigation brings sources, context, and a sense of wonder to the questions worth asking.

Cover of The Lost Instructions: Reconstructing the Ingenious Technologies of the Past

Coming Soon

The Lost Instructions

Reconstructing the Ingenious Technologies of the Past

Across 11 case studies, follow the surviving evidence, modern reconstructions, and the maker’s judgment behind ingenious technologies of the past.

Explore The Lost Instructions
Cover of The Cities Below: A Journey into the World’s Underground Cities

Available Now

The Cities Below

A Journey into the World’s Underground Cities

Explore remarkable worlds hidden beneath our feet through an illustrated investigation of human ingenuity, survival, loss, recovery, and memory.

Explore The Cities Below