A used bookstore might be able to get it for you, although the information will be out of date. Another reference is the annual Appalachian Trail Thru-Hikers Companion, available from the Appalachian Trail Conference. Another option is to use backcountry huts. There is a series of high-country huts in Colorado. In the East, the Appalachian Mountain Club runs a hut system, as well, in the White Mountains.
Lodging is dormitory style, and food is family style.
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