Scores: Between 1950 and 1970:
Cornelius Cardew,
Treatise
Cardew,
Notation - Interpretation
, pre-T
reatise
(1961)
Cardew,
Stockhausen Serves Imperialism
, post-
Treatise
(1974)
Michael Nyman,
Experimental Music, Cage and Beyond
(1974)
Brian Dennis,
Cardew's Treatise, (mainly the visual aspects)
(1991)
Robert Carr discusses the Hat Now recording (2000)