These dated 1931 prints are not wood or linocut prints but monotype prints. A technique used to pull a printed (reversed) version from a painting on a plate. These are usually "one-offs" but sometimes a second "state" impression is pulled with the remaining paint or ink. Some great artist tried at monotype printmaking and the results are often surprising.
Here as two great examples of monotypes by impressionist painter Edgar Degas (1834-1917) I found along my quest:
So, the bad news is my New Years endeavors failed so far but I am confident combining the readers of my Blog will reveal the artist in the end. The good knows is the search brought me to the Lithuanian Vilnius Jewish Ghetto where I found an artist today so obscured I could not even trace a single work of art created by her. She will appear in next my posting.