RE: Seeking Polikarpov I-16 plans
It's absolutely ridiculous that we are expected to buy model plans sight-unseen. Many aren't worth the paper they are printed on and I have several sets of worthless plans. Honestly, I sometimes think it would be better to just build over an enlarged 3-view.
Personally, I think of "Cleveland" as being somewhat ancient stuff. Ancient kits and ancient plans (of mostly teeny models).