Young Adult Book Reading Challenges discussion

Anyone catch a reference to something in AoK (lol, that works out to be a good acronym) that younger readers might have to strain to catch?

For example, I just recently read Atlas Shrugged, so I caught a possible reference in the name of the old factory worker, Mr. Starnes. In AoK he talks about how Hollis has been good to the factory workers.

In Atlas, Starnes is the name of a factory-owning family whose mismanagement of their business becomes catalytic to the entire story (I don't want to spoil this for anyone who hasn't read AS so I'll stop there).