Susan Wise Bauer is an American author, English instructor of writing and American literature at The College of William and Mary, and founder of Well-Trained Mind Press (formerly Peace Hill Press).
Maps you could get from another source; coloring pages (busy work); review games you could make up yourself with a blank gameboard downloaded from internet or photocopied at the library. Really, nothing notable or special. Many of the book suggestions are two difficult for grades two to five to read independently and comprehend. Not worth the $40 price tag.
The maps are great for use with geography, the pictures are sometimes a little too simple for my older student, but great for my youngest student. The reviews are good. All in all, I would recommend it as a companion activity book.