Thanks for the link Yapyap. I found the master reading lists
Master Lists for countries. That will definitely be a nice cheat sheet for difficult countries. I'm trying not to specifically look for other lists and having my search be more serendipitous for the most part now. I did find
this blog while looking for authors from Lichtenstein. I've only referred to it a couple of times in my search now and found things I had already found.
Another great resource I found was
Fantastic Fiction Countries which has lists of authors. The nice one about that one is almost all of the authors are translated meaning very few dead ends when looking.
Oddly enough I'm now at 52 countries with six left to fill in and it would actually cover all of wikipedia's and the UN regions outside of the nesias. I need titles for six countries and I've also got a couple of few troublesome ones for availability. Thankfully I'm not trying this pre-internet days.