UFO Journal Supplement:

“FLYING SAUCER REVIEW CASE HISTORIES”,

Supplement No. 17 – December 1973

(Flying Saucer Review, London, UK)

The journal supplement contains two 1973 UFO articles, “UFOs PICTURED OVER JAPAN” (UFO sightings over Toyama (city) and Nagai (city)) and “DID A UFO LAND IN THEIR FRONT GARDEN” (possible UFO incident in Queenstown, South Africa):

http://www.ignaciodarnaude.com/ufologia/FSR-CH%201973%20N%2017.pdf

Nagai is situated 91 kilometres (56 miles) north-east of Niigata (city).

Map of Japan (vidiani.com)
(vidiani.com image)