Dennis - Haven't read it cover to cover yet, but it's definitely not a "museum catalog" book. In particular, there's a chapter on the history of Samuel McIntire's life, education, etc..., and how this fits into the business environment and development of Salem, and a chapter on comparative analysis of McIntire's carvings between his early and late work, as well as some of his contemporaries.
There are also a lot of pictures, some of them quite good close-ups of the carved figures and ornament on the Derby chest on chests, which I've not found in any of my other books.