This image by Ted Joseph was from that book, and was his, sort of, police sketch of what the creatures looked like that Whitley Strieber had described to him.
テッド・ジョセフによるこの絵は この本に載っています　ストリーバーが語る 生き物の姿を描いた― いわば 警察による似顔絵のようなものです