However, in the late 1970s I was lucky enough to acquire a copy of the original report in Fr. Gill's own words. It is included in a 45-page document entitled:
Flying Saucers Over Papua
A Report on Papuan Unidentified Flying Objects
by the Rev. Norman E. G. Cruttwell, M.A. Oxon., of the Anglican Mission, Menapi, Papua, New Guinea.
(dated) March, 1960.
He got involved in collecting the reports after a sighting of his own the previous December, when he wrote to Flying Saucer Review, and was asked to be their local investigator. I presume, therefore, that at least part of this story was originally published in that journal. In any case, this is the full account.
The document had been updated slightly. There is a reference to a 1965 magazine article, along with a short 1976 addendum by the Vice President of the Queensland UFO Research Bureau, which presumably "published" the report. In fact, it is simply a mimeographed typescript, with the addition of a few drawings obviously traced from the originals. In other words, it is inaccessible to the vast majority of people. You would have better luck getting a close encounter of your own! For this reason, I wish to share it with you.