He did continue to contribute to exhibition catalogues, and wrote some key articles. Notably in 1966, 1968 and 1970 he published a series of articles in "Studio International" questioning the perceived ascendancy of American artists, at the expense of British and Parisian artists. His final essay on the subject was in a closely worded article of some 14,000 words published over a period of three days in "The Guardian" in October 1974. He also wrote passionately in defence of the independence and autonomy of English Art Schools against their integration into the polytechnic system. Heron's articles and essays have been republished in collected works, such as 'Selected Writings by the Artist' in "Patrick Heron" (Oxford: 1988)", "Patrick Heron on Art and Education" (Leeds: 1996), and "The Colour of Colour" (Texas: 1979).