i printed them out sometime back. don't know where since no link printed on the paper. used to it doing that. the one posted here says McCalls' Quilting and my copy i printed was for a Ruby Red pattern. so try McCall's for a ruby red. it's probably very old though. good luck.
if i find it i will let you know.
If i get energetic, i may just make my own acrylic templates. i have the printed out one. it is just drawing. good luck.
I did find this variation, not bad.
https://beyondsockmonkeys.com/tutori...riation-block/