The book is meticulously researched and footnoted. There were huge gaps in my knowledge of Kurtzman prior to reading this, but people much better informed than me have said there is a lot of new information in this book. I cant' recommend this highly enough for anyone interested in the history of comic books or humor in America in the second half of the twentieth century.
You can order the book from the publisher, Fantagraphics.
An interview with the author.
And here's a nice article in The Atlantic about Kurtzman and the book.