These are re-releases of classic 70s sci-fi novels by Samuel R. Delany. Published by Vintage in 2001. I love the Swiss look of these, with the visible grid structure, and a font that looks a lot like Helvetica...but I don't think it is...
Here's a blurb about Dhalgren, the most famous of these novels, from Amazon:
"A mysterious disaster has stricken the midwestern American city of Bellona, and its aftereffects are disturbing: a city block burns down and is intact a week later; clouds cover the sky for weeks, then part to reveal two moons; a week passes for one person when only a day passes for another. The catastrophe is confined to Bellona, and most of the inhabitants have fled. But others are drawn to the devastated city, among them the Kid, a white/American Indian man who can't remember his own name. The Kid is emblematic of those who live in the new Bellona, who are the young, the poor, the mad, the violent, the outcast - the marginalized."
