My wife, R. S. Perry, published a book in 1974 entitled Charles Ives and the American Mind. Her book is a very broad and knowledgeable study on American Transcendentalism and its impact on creative artists such as the composer Charles Ives. I have re-edited that book for a second edition. That new edition is now available on amazon.com.  I will occasionally post some quotes from her book on a new page called R.S. Perry’s Charles Ives.