From my www.wildyorkshire.co.uk blog, 30th May 2004:
A family gathering means that I meet up with George, aged 7, my great nephew. At a previous family party he and I collaborated on a story, Firefeet. George improvised the story – and for once I was careful not to prompt him, or discuss the plot with him, it was entirely from his own imagination – and I drew the illustrations as the story progressed. George kept the original copy, which was just on a piece of folded scrap paper but I was so haunted by the tale that I wrote it out again from memory, redrew the illustrations, coloured it in Photoshop and printed out a few copies on my colour printer.