1842-1901, postal history Armenian areas of settlement in the Ottoman Empire, 7 covers inside the Turkey from 1842, letter Erzurum at an Imperial cabinet member in Istanbul, 1870, official letter Erzurum to the Armenian patriarchate in Istanbul, 1871, official letter with magnificent framed BAYBURT in green to Erzurum, 1872, envelope Van to Istanbul, 1892, Bitlis to Istanbul, and 1901, registered cover Erzurum to Istanbul, in addition to it 1902, postal stationery postcard Bitlis to the United States, 1925, document in Cyrillic script of the Persian consulate in Erivan, a rare offer - see illustration