Bila (Luhove) on the map "Karte des Westlichen Russlands", T 35, 1917. According to <a rel="nofollow" class="external text" href="https://rcin.org.pl/dlibra/show-content/publication/edition/43788?id=43788">Digital Repository of Scientific Institutes</a> and <a rel="nofollow" class="external text" href="http://kpbc.umk.pl/dlibra/publication/195829?tab=1">Kujawsko-Pomorska Digital Library</a> the map is in the public domain.
Prusy. Königliche Preussische Landesaufnahme Kartographische Abteilung
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