[hullo]

I don't know about 'official', but it's highly likely that the Chronicle of Higher Ed/Chronicle of Philanthropy are the most referred to. Here's a list from 2008:

http://chronicle.com/stats/big_gifts.htm

And here's a searchable database:

http://philanthropy.com/stats/topdonors/index.php

[sb]

Thanks for that list, it seems to me that this is the list all of the articles refer to.