AN EARLY 1920 SOVIET LITERACY PROPAGANDA POSTER BY SERGEY IVANOV (RUSSIAN 1885-1942) KNIGA NICHTO INOYE KAK CHELOVEK GOVORYASHIY PUBLICHNO[A Book Is Nothing but an Individual Speaking out Loud], monochrome lithograph, 1920, published by Gosudarstvennoye Izdatelstvo, 64 x 47 cm (25 1/8 x 18 1/2 in.)