I worked at Caltech for a while, in the Department of Economics and Political Science. One of the economics professors was a big climber and trekker. This postcard is from him, off on one of his adventures.
Interesting depiction of Ganesha, the Hindu deity responsible for many things, but mostly for both creating and removing obstacles. That he sent this card makes sense, given the description of the trip he was on. Many, many obstacles.
For more on Ganesha, check out