That is The Modern Library's list. The Rand cultists turned the readers' poll into a joke - and they're now turning American political life into a very unfunny joke, if such a thing is still possible. We were warned; but we didn't listen. The editorial board's selections are pretty much rubbish as well.
Where's 'Winnie The Pooh'?; Enid Blyton's Famous Five; Beatrix Potter?
My favourites:
May I add, the outsiders, 1984, boy/going solo.
For those who like lists of this sort, this site, put together eons ago in digital time, contains many such lists to peruse, scan, consult, etc.:
http://www.interleaves.org/~rteeter/greatbks.html
Biggles; Alice; Jules Verne; The Saint and James Bond? Ulysses indeed! Poseur tosh.