I used your stock in a massive sketchdump that I made. I really thank you for the amazing reference that helped me! Here's a link, I credited you in the bottom (linking to the picture). Here is the picture: [link]
I've used this image for part of the art to appear on a book cover for "Deadly Affairs" by John J. Smith, published by Dark Red Press. Please contact me to see about getting the correct information off you so that I can add it to the legal page of the book before it's released.