I know absolutely nothing about the Russian artist and illustrator Mai Miturich, except what I just found on the internet:
Miturich ( 1925-2008) was the son of two artists, Petr Miturich and Vera Khlebnikova. In Russia he is a well known and loved artist.
I used to buy cheap Eastern European picturebook sometimes as a student, for their lovely, and in my eyes very foreign illustrations. I don't have all of them anymore.
Was one of those maybe by Miturich? Surely I would have kept it?
His work is clear and poetic, and very 'mid-century' as we now call it.
I'll see if I can find something by him now.