I’ve never really thought of Degas being associated with any other type of art form besides pastels. I read somewhere recently that he had also done mono prints or monotypes so looked onlinefor more info about them.
A brief definition can be read here
After reading about how he would take two prints, one strong that he kept as the original and one weak which he would use to work on further with pastel or gouache. I remember that I had heard of this on a tv programme but forgotten about.
I also found this interesting PDF about Degas art on the Metropolitan Museum of Art in New York