From audible.com:

Babel-17, winner of the Nebula Award for best novel of the year, is a fascinating tale of a famous poet bent on deciphering a secret language that is the key to the enemy's deadly force, a task that requires she travel with a splendidly improbable crew to the site of the next attack.

DHALGREN

"...A portrait of a city called Bellona which has suffered a disaster so cataclysmic that the very fabric of the space-time continuum has been distorted... Buildings burn endlessly but are not consumed.  Radio and television broadcasts cannot enter or leave the city.  The sky is sealed with thick haze.  When it clears, strange portents are seem: two moons, a grotesquely swollen sun...

DELANY'S KALEIDOSCOPIC PROSE - AND HIS POWERFUL VISION OF A SOCIETY TRYING TO COME TO TERMS WITH CHAOS - MAKES THE WHOLE JOURNEY WORTHWHILE."

- Gerald Jonas, Penthouse

BY SAMEUL R. DELANEY
Author of Triton, Nova and Tales of Nevèrÿon

From librivox.org:

Delany's first novel, from 1962, serves as a sort of prologue to the subsequent Captives of the Flame, 1963. Set several centuries after the Great Fire -- a nuclear holocaust -- a young woman seeks her destiny with the help of a four-armed youth