The MatrixN. H. Pritchard A bold, pioneering, "free souled" and long rare classic of concrete poetry, available for the first time in 50 years. Originally published by Doubleday and Company in 1970, N. H. Pritchard's The Matrix was one of a tiny handful of books of concrete poetry published in America by a major publishing house. Sadly, the book was given little support and was not promoted, and it has long been out of print. However, it remains a cherished