I can't remember if I posted this before. I looked but couldn't find it in the list archive. Poultry Success, Volumes 16-17 Sept. , 1905 . Pages 10 and 11 . http://tinyurl.com/ow28mtv How to Breed Exhibition Silver Gray Dorkings. An Interesting Paper on Mating This Celebrated English Fowl For Best Results. By Frank L. Platt. Written Exclusively for Poultry Success.