In the 19th Century, a war on the boundary between Europe and Asia had an unexpected effect. It caused the American public to re-examine one of the terms with which they described race: Caucasian.

Don Wildman is joined for this episode by the award-winning art historian Sarah Lewis. They explore how the term Caucasian came to be associated with whiteness, and how photography was fundamental to unpicking this myth.

Sarah is the John L. Loeb Associate Professor of the Humanities and Associate Professor of African and African American Studies at Harvard University. She is also the founder of the Vision & Justice initiative and author of the book discussed here: 'The Unseen Truth: When Race Changed Sight in America'.

Produced and edited by Sophie Gee. Senior Producer was Charlotte Long.

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