I remember these, do you?
Those are the only ones I've seen with my own eyes. The proper term is probably "transfers" and not "stickers." That's the front cover of my uncle's D&D binder, which contains an old photocopy of Moldvay Basic Set, a punched and split copy of Moldvay Expert Set, and a lot of Arms Law / Claw Law tables, all photocopied. I have no idea if he own the originals or not; if so, I never saw them. This is the same uncle I got my Holmes Basic Set from.
The snoopy sticker? I don't know, it's too neat for me. I'm terrible at lining stickers up. I'd guess his daughter, my cousin, did that.
I will post up some of the Arms Law / Claw Law criticals when I get a chance, and compare them to the Rolemaster boxed set.