It seems the pictures are mostly from Poland. For more perspective, here is a large collection of old pictures from Bulgaria: http://www.lostbulgaria.com/index

It seems the pictures are mostly from Poland. For more perspective, here is a large collection of old pictures from Bulgaria: http://www.lostbulgaria.com/index.php?cat=9 http://www.lostbulgaria.com/index.php?cat=9 (You can see the translated descriptions with the language combobox on the top)