James McNeill Whistler (1834–1903) as Etcher – The Metropolitan Museum of Art https://www.metmuseum.org/essays/james-mcneill-whistler-18341903-as-etcher
Etching offered Whistler the opportunity to sketch ideas quickly, then slowly refine and develop them through multiple states, creating variations with expressive inking.
Commercial activity along the Thames, whose banks were densely lined with warehouses
