Sketch of Clouds and Terrain (from Sketchbook VII)

Sun's Rays Breaking through Storm Clouds (from Sketchbook VI,I)

William Trost Richards

Breaking Waves (from Sketchbook VII)

William Trost Richards

Sketch of a Breaking Wave (from Sketchbook VII)

William Trost Richards

Cape Flattery Landscape (from Sketchbook X)

William Trost Richards

Neah Bay: Cape Flattery (from Sketchbook X)

William Trost Richards

Neah Bay: Cape Flattery (from Sketchbook X)

William Trost Richards

Mountains (from Sketchbook X)

William Trost Richards

Schets van rotsen langs een weg

Jan Siberechts

Sketch of Breaking Waves (from Sketchbook VII)

William Trost Richards

Voorstellingen van een hoed, omslagdoek en stadsgezicht

anonymous

Mountainside (from Sketchbook X)

William Trost Richards

The Delaware, East Branch, Walton, 1871 (from Sketchbook)

Daniel Huntington