[Владислав]

Help please attribution designs (drawings), they all signed M.Ch. and dated from 1921 to 1923 GG (seen from the drawings, all have one year of creation). Perhaps this is how some sketches for posters? Maybe someone seen something like that?

1. Train, bridge, river, Hammer and Sickle, engineering paper, ink, pen, size 14h19 see, 07.01.1921.
2. A plant and river engineering paper, ink, pen, size 10h14 cm, 1923.
3. Emblem, Soviet hammer and sickle, engineering paper, ink, watercolor, pen, size 9,5 x8, 5 cm, 1923.
4. Demonstration, Technology paper, ink, watercolor, pen size 14h10 see, 1923.