Here is a list of resources - online and off - which be helpful for further research into Area 51.
Desertsecrets.com
This site is contains many great visuals and pieces information about Groom Lake and the areas around it, including government documents and 'trip reports' from various vantage points around the Nellis Range. Don't miss the 'Other Photos' section, which contains some astounding photographs of Groom Lake before it was top-secret.
Area 51 Research Center
As described in Area 51 & Related Sites of Interest, the Research Center has an excellent web site. See Calendar dates for Air Force and other Area 51-related ctivities, as well as an excellent timeline of the history of military involvement in the region.
The Groom Lake Desert Rat
A must-read (but no longer published) newsletter by Glenn Campbell, a software engineer-turned-Area 51 expert. He records in detail the goings-on at the base and everywhere else as the frenzy of the mid-90s ran its course. Read about equipment seizures and detainments by the Cammo dudes, and Campbell's rise to fame.
"Area 51" Viewer's Guide
As mentioned in Area 51 Viewing directions, this is a truly comprehensive and authoritative guide to Area 51, Nellis, and all related places. It was compiled by Campbell over the period he was writing the 'Desert Rat'. If you're serious about visiting the area, or even if you're just looking for a good read, look no further. The link is the only place on the web where the Viewer's Guide is available - don't be scared off because it isn't Amazon.com, we had no problems ordering.
Area 51 @ Aliens On Earth
Again, don't let the title fool you. This is the last Campbell-associated link; it is an online version of the above two resources, containing a great deal of information and many photos of the facility and surrounding sites.
Bluefire
This is a website created by a man who spent many years poking around the desert, much like Campbell, in search of adventure just outside the 'restricted' line. There are many entertaining accounts of climbs of mountains in the area, as well as hunts for various other items (like a crashed SR-71).
