Group photograph from the birthday of prince Boris of Tarnovo

20.01.1901, from the birthday of prince Boris of Tarnovo of his coming of age of adolescence, Plovdiv. On the photograph: knyaz Ferdinand with prince Boris and prince Kiril, bishops of: Plovdiv Natanail, Sofia Partenii, Dorostol and Cherven Vasilii; general Danail Nikolaev, general Paprinkov and others. Attached to the photograph is a printed postcard from the same event