What Would You Buy with $50K?

A friend of a friend has until Monday to spend a $50,000 gift on books for a brand-new elementary school library in New York City. She's not a librarian, so she's even more overwhelmed than the average librarian would be. What would you buy to build a core collection? I've put my list of initial ideas here:

How to Spend $50,000 on an Elementary School Library

Obviously these are just my opinions, and kind of slap-dash at that. Also, all my collection development experience is in fiction and AV, not nonfiction. I'd love to add your suggestions to the list, if you leave your comments on either this page or the list itself!