Since Chris Collyer’s posting, the “Prehistoric Rock Art of the West Riding” (PRAWR) has been published.
The numbers and ten-figure references in that publication corrresponding to Chris’s Stones 1, 2 and 3 are
Stone 1 – PRAWR 285 SE 12822 46190
Stone 2 – PRAWR 287 SE 12832 46165
Stone 3 – PRAWR 288 SE 12836 46147