The link above is the one that shows how I drafted and made my slops contract jacket... The one I made is slightly different than Kass's pattern, Mine is a little longer, and the pocket flaps have more "scallop" I think there are three buttons on the cuffs on Kass's and only two on mine (well and mine isn't lined with wool cotton....)
It's kinda interesting how similar they both are... well we did use the same picture to work from......
I used an old grey Navy blanket to make mine, I figured it would be close to Shrunk Kernsey..... But I didn't have any wool "cotton", so I cheated and used cotton, cotton....