This black and white potted tree drawing reminds me of a Victorian-era drawing room or solarium. The elaborate design on the square pot along with the frond-like leaves also has a tropical feel to it. Could you not just see something like this on the set of Casablanca?
There were so many wonderful illustrations in Hill’s Album of Biography and Art. The 1882 work by Thomas E. Hill has provided more vintage illustrations for Reusable Art than probably any other resource I’ve found.
This image is copyright free and in the public domain anywhere that extends copyrights 70 years after death or at least 120 years after publication when the original illustrator is unknown.