New maps and information supplemented chapters of Russian empire maps (till WWI) Two-verst (1:84000) map of west borderland of Russian Empire (orig. named "Двухверстовая карта западного пограничного пространства") and  One-verst (1:42000) map of west borderland of Russian Empire (orig. named "Одноверстовая карта западного пограничного пространства ").

By the way, soviet RKKA topographers republished and published 1-verst and 2-verst maps practically till WWII (parallel with maps in scale 1:50000 and 1:84000). People asking: there are some differences in content between maps in scale 1:50000 and 1:42000 or 1:84000 and 1:100000. Answer - differences in content are, sometime minor but important...