Through American Eyes: Frederic Church and the Landscape Oil Sketch, National Gallery - exhibition review - Exhibitions - Going Out - London Evening Standard

http://www.standard.co.uk/goingout/exhibitions/through-american-eyes-frederic-church-and-the-landscape-oil-sketch-national-gallery--exhibition-review-8523947.html

Sketches from scratches:  http://Woohs.blogspot.com