Friday, and an artist whose work I want to share

Wanda Gag, an American. Known mostly as an illustrator of children's books, but I see so many intriguing shadows in her work. This lithograph from 1936 is titled Progress:

Progress, lithograph by Wanda Gag, 1936

Her Wikipedia page is sadly lacking in images, but there are plenty scattered all over the internet on sites such as this one (you'll need to scroll down), and her books, as well as books about her, are on Amazon.