Start with high-confidence eastern europe travel books, then narrow by subgenre or adjacent topics.
20th Century Black Lamb Grey Falcon
Rebecca West
In Europe's Shadow
Robert D. Kaplan, Paul Boehmer
The Broken Road
Patrick Leigh Fermor, Colin Thubron
Street Without a Name
Kapka Kassabova
Bulgaria - Culture Smart!
Juliana Tzvetkova
Green Mountains
Caroline Eden
Armenia - Culture Smart!
Susan Solomon
Georgia - Culture Smart!
Natia Abramia
