In the last bullet of Appendix I on page 557, I state we have 31 national trails, and 30 established under the National Trails Act of 1968. I counted Ice Age Floods National Geological Trail among our national trails as the 31st, but this trail is not affiliated with the National Park Service. Indeed, I removed reference to Ice Age Floods National Geological Trail from Chapter 39 though I shared the essence of the history it highlights at Dry Falls State Park in eastern Washington state. I simply neglected to make the simultaneous adjustment in the appendix.
However, it is quite likely we WILL have one or more new trails added to our National Trails System. Current Congressional action is considering the American Discovery Trail from Cape Henlopen State Park in Delaware to Point Reyes National Seashore in California, and a Route 66 National Historic Trail commemorating the age of the automobile and significance of the historic road.