In September 1848 three young London art students — Dante Gabriel Rossetti, John Everett Millais, and William Holman Hunt — founded a secret society in a Bloomsbury bedroom and signed their pictures with the initials PRB. They were attacking three centuries of European academic painting. Seven paintings from the Pre-Raphaelite Brotherhood and its second-generation followers.

A young woman in white drifts down the river toward Camelot in a small wooden boat, chains slipping from her hands, candles guttering. Reading Waterhouse's most famous Tennyson illustration — and the Pre-Raphaelite tradition it completed.