Hi Ellen, thanks again for your very helpful answers! I am gradually discovering more and more of the project-based resource and reliable sources pages. They are VERY helpful, as is "Kitty's Library"! I guess what I was hoping for is a "fail-safe" search strategy to be certain that I find a source if someone else in the WikiTree community has already discovered and catalogued it - to avoid unnessary questions and effort. Since I can't easily guess on what "low level" page a given source might appear, I think the "text search" answer is best this time. Lots to try out and discover!