Children's portraits of the sisters Elena and Bulgaria Linkovi

Children's portraits of the sisters Elena and Bulgaria Linkovi, under the photo - their names; town of Svishtov (likely); 1878; taken by unknown photographer; black-and-white photo, dirty; photograph glued to a cardboard-passepartout; passepartout - 6,1 х 10,2 cm, photograph - 9,4 х 5,6 cm; Bulgarian language; Inventory in Bulgarian language.