Clement Greenberg's first essay on this subject focusing mainly on pictorial art. First published 1960.

Essay by David Cohen comparing the views of the two British critics. Published in 1991 in the annual publication of the International Association of Art Critics.

An illustrated study in five chapters by Christopher L. C. E. Witcombe.

Article covering the history, goals and critical controversy of this movement.

Linda Larson's thesis on the Armory Show of 1913 which introduced Americans to a new "modern art" challenging and changing the idea of what makes art "art." Site includes biographies on many of the artists.

A collection of articles, reviews and letters from the archives of Guardian Unlimited.