Project Blue Book - UFO Investigations: "From Alaska to Arizona, from Florida to Labrador, UFO sightings were reported from within North America and even around the world. They are documented in these files. Very few photographs are included in these records. Instead these are text descriptions of encounters or sightings during the years 1947 to 1969. Names of people involved in the sightings are excluded. They are arranged chronologically, then by location"