I got it! I got the job I interviewed for a couple of weeks ago. What a wonderful relief. The position is part-time, but it's year-round, permanent, and pays well. I'm very happy to have it, particularly in this job market. Once I decide how much detail I'm going to share about the position, I'll update more!
In the meantime, here are some interesting news stories involving museums (from - surprise, surprise! - the NY Times):