"Johns used letters or numbers as a means of reintroducing the signifiers of a collective sign system into a Modernist 'field' previously answerable to subjective judgments of taste. The textures in his drawings in particular are subtly...
"Whilst clearly representing a critique of free expression, Lichtenstein's 'brushstrokes', like most of his other Pop works, had an exact comic-book source. They initially derived from a strip entitled 'The Painting' published in Charlton...
