Read the main page about the Ilkley Moor encounter.
There is one and only one photograph. Its quality is unfortunately insufficient for any deep analysis: no matter how the contrast or other properties of the image can be improved, it is still too much blurry to prove anything and the being shown just as well be some dummy. However, the witness took the picture. I have two different scans presented here, one in color and the other a cropped version in black and white.