Here's one with a Robert Hughes attribution. I know it's been on here before but it's the only one I have.
Maybe it's been seen here before, but I'm sure glad you reposted it: I'd missed it earlier, and this posting made me run for my work table and go to gouging on the buttstock I'd thought I'd just about finished whittling on.
Funny thing about it is, the closer I get mine to shaped like Hughes did on this one, the better she feels against my cheek... and I'd thought it felt pretty good before.
That's what I love about what I think of as the "classic" SMR: they might look simplistic, but those ol' boys were masters of form-to-function design.