To some degree it depends on what genre of cycling books you like to read.
To start, an amusing take on the Tour de France, which many here will have read,
"French Revolutions" by Tim Moore.
To follow, a couple of more eclectic ones:
"Velo" by Paul Fournel and
"Lands of Lost Borders" by Kate Harris. I would highly recommend both. Velo is a collection of essays evoking many aspects and experiences of cycling from learning at an early age to the pain of bad days on the bike and everything in between. It was originally in French, ensure you have a get hold of a translated copy unless your French is excellent! And superbly illustrated by Jo Burt. Kate's is at its most basic a travelogue, her journey along the silk road. But it is so, so much more than that. See
here.
I have a fondness for Mt Ventoux, so
"Ventoux" by Jeremy Whittle is a good read. But for something a little different, you could try the novel
"Ventoux" by Bert Wagendorp. Not really a cycling book, more a novel with Mt Ventoux as a backdrop. Original in Dutch.