Stuck in history room (spoilers i guess)

[Pirroh]

For the life of me I can figure out how to get out of here, I pull the book and can't figure out what to do next to progress. I thought the puzzles in this were meant to be easier than penumbra? :confused:

[N3oN667]

There are 3 books.

[Pirroh]

Yeah I JUST found them, feel so stupid right now.

[yogibbear]

Did you listen to the voice over? It pretty much gave away that it'd be some indiana jones type timed trigger system.