I think The Scream is still "missing"?
When in Pasadena, everyone should visit the Norton Simon Museum (formerly, the Pasadena Museum of Art). It's hard to leave that place with any tears left. Plus, he collected some rather impressive lingams . . . if you're into that sort of thing. You can take a reading break and read all about it here:
Norton Simon Museum - Wikipedia, the free encyclopedia
The standing joke is that Norton, who had an amazing acumen for remarkable art of the world, not just Western Civilization, bought the paintings and his wife of many years, Jennifer Jones, picked out the frames.
There is one gallery that is an intentional joke where . . . well, you just have to see how the Manets and Monets are positioned between between Ingres on one side of the entrance and Bonnards on the other side.