Bogusz, Kazimierz. “Masuria and Ełk in Zygmunt Gloger’s Writings from 1863 to 1876”. Bibliotekarz Podlaski 34, no. 1 (March 30, 2017): 73–86. Accessed April 29, 2024. https://bibliotekarzpodlaski.pl/index.php/bp/article/view/291.