The Sighting Wave Directory (NICAP)
*U* UFO Database Website [Maps & Statistics] (Larry Hatch)
Difference In Distribution of Sightings [Air Force & NICAP] (David Saunders)

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RSID (Regional Sighting Information Database - (Francis Ridge)
RSID/CE-I - Close Encounters of the First Kind [within 500' of Witness(es)]
RSID/CE-II - Close Encounters of the Second Kind [Physical Evidence]
RSID/CE-III - Close Encounters of the Third Kind [Alien Entities On or Near Craft]
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UFO Catalogs
BLUE BOOK - Full case reports by year
UFOCAT - Computer catalog of raw UFO sighting reports [120,000] (Dr. Don Johnson)
Inactive links:
HUMCAT - Humanoid Catalog - David Webb
UNICAT - Unique Catalaog - Produced and maintained by Dr. Willy Smith
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UFO Alerts & the Nuclear Connection (Francis Ridge)

www.nicap.org/