I just finished this book (April, 2019) and provide full PDF here. It pairs personal essays I wrote in Olympia, Washington, this winter/spring, with essays on a wide range of Western thinkers–from Parmenides to Charles Olson–on the imagination, its powers and its functions. It is the book on the imagination I’ve always wanted to write, or at least as close as I’ll come to it in this lifetime. The paperback version is available on Amazon.com at the cost of printing. You can find it via my Author’s Page in the banner at the top of the page.
(The page numbers in the index are for the print version rather than the PDF)