Let us say that I want source of information that gives worked examples for a very specific topic (let us call it X). I have access to a (pretty good) library and have searched both this and the world wide web endlessly for some examples - to no avail. Clearly what I am after can not be found by a quick google search. Would it be appropriate to ask for such a resource on PSE or would it likely get closed of been off topic. (I suspect the latter hence why I am checking here first).