Interesting Book by Glenn Campbell (author and publisher)
"For the first time in history, my Area 51 Viewer's Guide from the 1990s is available FREE to anyone who cares to download it. This is my visitors guide to the secret military base in Nevada, home of UFOs, government conspiracies or anything else you care to imagine. (Okay, I don't take you inside the base itself, but I tried to catalog and collate all the information we did have at the time.) This guide was instrumental in bringing legitimate press attention to the base and making Area 51 a public phenomenon."
Get the ebook here:
Free Book: Area 51 Viewer's Guide - by Glenn Campbell-searchable_area-2051_viewer-27s_guide-pdf

or here: