I found this
pattern but I couldn't figure out if it was a cuff down...or toe up... you might be able to contact them and see though...
I hit submit to fast...I'm still looking for others
ETA: Looks like there is a book you might be able to check out at your local library 'Not Just More Socks'...I'm not sure if they are cuff down either..
I did find a few free ones but they are all toe up...