NICAP:
Official U.S. & Canadian Governments UFO Documents
This NICAP Web page contains the following documents:
1) Official Government UFO Documents,
2) General Information Documents and
3) U.S. Military Service UFO Documents/Directives.
The official government UFO documents come from the U.S. Department of Defense, NMCC (National Military Command Center, Pentagon), CIA, FBI, NSA and Canada's Department of National Defence (DND):
http://www.nicap.org/documents.htm