Many, many books have been written on Kathmandu, Nepal, several of which will be of interest to travelers who are planning to visit the city and would like to learn more about it before their trips.  One book, Power Place of Kathmandu:  Hindu and Buddhist Holy Sites in the Sacred Valley of Nepal , is a must-read for anyone planning to visit the city's holy sites.  Keith Dowman, the book's author, writes at length about these sites, their histories, and significance in the culture.  Dowman's prose is accompanied by several beautiful photos taken by award-winning photographer, Kevin Bubriski. 

Another interesting read,  Love and Death in Kathmandu  tells the story of Nepal's crown prince, Dipenda, killing his family (and allegedly himself), including his parents, siblings, and a few aunts and uncles, in 2001.  The book traces the family's history while examining the prince's possible motive--which no one will ever be sure about, but is believed to have something to do with his mother's disapproval of the woman he wanted to marry--by retracing the events that led up to the crime.   Very Shakespearean stuff...

For travelers interested in Kathmandu as well as trekking, The Wishing Trees by John Shors is a novel set in both the city and the mountains.

Tiger for Breakfast by Michel Peissel is an entertaining read. It's about Nepal in the 60s and 70s and in particular about the legendary Boris of Kathmandu, who set up the Royal hotel, Nepal's first hotel, with its famous Yak and Yeti bar. The book is easy to find in Kathmandu.