London – A rediscovered masterpiece in watercolour, A Reception in the Harem by John Frederick Lewis (1804-1876), unseen in public for over 60 years, leads Bonhams 19th Century & Orientalist Paintings ...

The BBC's Diane Cole reports on an exhibition of 19th-century paintings believed to depict ... clear skies and untouched landscape was the British-American painter Thomas Cole (1801-1848).