Mirra Eitingon in Blue Bird, 1908 Popular postcard of “Mirra Birens” (left) (Mirra Birovsky Eitingon) in the world premiere of Maurice Maeterlinck’s Blue Bird, Moscow Art Theater, 1908. Print Full Image Rights Public Domain Date / time 1908 Related contentEncyclopedia Article: Mirra Burovsky-Eitingon