Given a question asking for the original source of a quotation. Some digging around the 'net has thrown up an avenue for further exploration but not an answer. What I've found (and their links) would probably take at least a couple of comments.
Post what I've found as one or more comments, risking a potential "don't answer in comments" response (even though it's not [yet] an answer)?
Post what I've found as an answer, even though it isn't really. The details might lead to answer, but might lead down a blind-alley.
Don't post anything because I don't have a full answer. The problem is that I probably can't take the digging any deeper, but someone else might be able to.
Neither, as asking for the source of a quotation is off-topic (doesn't seem to be specifically allowed or disallowed; may depend on how wide the "and Usage" part of the site is taken).