I found this book to be a well-written, clear explanation of the history of installation art from as early as the surrealists to the date it was published. Some of the images are too small to get a better feel for the installations they are depicting, but the descriptions of these installations are usually detailed enough for a good idea. This book along with "From Margin to Center" pretty well covers the subject up through 2004. Something needs to be written to capture the amazing works that have been happening since then. I'm waiting for that to happen.