Sella Hasse (February 12, 1878-April 27, 1963) was a German painter and graphic artist.
Biography on German Wikipedia: https://translate.google.com/translate?hl=en&sl=de&u=https://de.wikipedia.org/wiki/Sella_Hasse&prev=search&pto=aue

Telegraph Workers (Telegrafenarbeiter) by Sella Hasse
from the periodical Die Lebenden, vol. 3, no. 1/2 (Feb 1930)
1930 (print executed 1929) / Woodcut / Image: 6 5/16″x4 5/16″ / The MoMALibrary, NYC

Sella Hasse on Artnet: http://www.artnet.com/artists/sella-hasse/

Further reading:
Google translation of the city of Wismar, Germany, website
https://www.adk.de/en/academy/sections/visual-arts/kaethe-kollwitz-prize/laureates/hasse-sella_en/
Google Books excerpt from “Dictionary of Women Artists” edited by Delia Gaze