National Park Service - Montezuma Castle
Montezuma Well is a detached unit of Montezuma Castle National Monument. There is a link to one page here about The Well. Too bad the Park Service doesn't give more information about this marvelous place. Montezuma Castle is a spectacular ruin situated high in an alcove above Beaver Creek. If you are visiting, this site has an excellent visitor's center, so it worth visiting both sites.

Desert USA - Montezuma's Well A Living Desert Oasis
Excellent synopsis of history, flora, fauna, and early native inhabitants.

Montezuma Well: The Living Desert Oasis
Very detailed description of geology and unique aquatic system. Prepared for the National Park Service by Vincent T. Wagner and Dean W. Blinn, Department of Biological Sciences, Northern Arizona University.

Other nearby National Monuments, ruins and places of interest

Coconino National Forest V-Bar-V Heritage Site
Very near The Well, this site is the largest known petroglyph site in the Verde Valley and one of the best preserved.

Tuzigoot National Monument
Located across the Verde Valley from Montezuma's Well, this well restored Sinagua ruin sits high a top a hill. Excellent Visitor's Center.

Coconino National Forest - Palatki Heritage Site
Small, but well preserved Sinagua ruin with petroglyphs West of Sedona.

Coconino National Forest - Honanki Heritage Site
Another small group of ruins further west of Palatki.

Coconino National Forest - Red Rock Country
The homepage for the Red Rock District around Sedona. Recreational activities, maps, passes and permits, etc.

Organizations

The Arizona Archeological Society
If you are interested in learning and participating in archeology this is a good group to join. Links to all chapters including Verde Valley Chapter.

Friends of the Forest
Non-profit group that works with the Red Rock Ranger District of the Coconino National Forest. They help maintain trails and cultural resources and also have educational speakers.