I'd throw in The Saga of Exiles by Julian May. Excellent exploration of psi power, set in Pliocene Europe (by way of time travel). Sounds mad, but May both grou

I'd throw in The Saga of Exiles by Julian May. Excellent exploration of psi power, set in Pliocene Europe (by way of time travel). Sounds mad, but May both grounds her characters and casts them archetypes, and it's fantastically dramatic. One of the first books I read where the cumulative trauma and psychologies of the main characters inform their actions.