Chandler chalk drawing

When I "found this" Yes, I rescued it before the trash man got there. I couldn't even tell what it was. The dust was so thick. And the picture was unrecognizable. But the frame caught my eye. The pin nails holding the cardboard on the back are OLD! I researched the name and found out he did chalk drawings. The glass was so dusty inside. So i researched that also and carefully took off the cardboard. I cleaned the glass per the instructions and voila! A beautiful drawing could be seen through the glass!
I would love some info on it. I cannot find any information about it on my own. Thanks for the help!