UFO News Article:
“Second Sighting: Pilot Sees Flying Object”,
21 September 1960 (The Calgary Herald, Canada)

John Phillips, an experienced pilot, sighted a triangular shaped UFO over Calgary, Alberta, Canada on 17 September 1960, at 6:00 p.m. MST, according to the article:

http://news.google.com/newspapers?id=8WpkAAAAIBAJ&sjid=ZHwNAAAAIBAJ&pg=6004,4339125

Aerial view of Calgary, Canada
(panoramio.com photo)