This unique guide groups spots located within approximately 100 miles of Philadelphia. Each chapter begins with an overview of a historical era, and concludes with concise directions for locating sites which typify that era. Colorful but concise descriptions note the site's significance. Cross references allow users to note other things to see and do in the same area, regardless of their historic time frame. The guide's organization should interest amateur historians, parents wanting to show their kids a slice of American history, or those wanting to see specific sites with a common theme. Libraries owning traditional series guides for this area may want this as an adjunct acquisition. Recommended. Library Journal