I've found amazon.com to be a good source of the donna leon mystery novels, new and used. Don't know why they aren't more readily available in the US.

ttt

Hemingway's Across the River and into the Trees--a book that I found easy to read in college, but one that I did not really appreciate. I reread it recently, and now, in my mid-50s with much more life experience (and fewer years ahead of me than at my first reading), I understand much better.

Not a humorous book--poignant, moving, sad. Somewhat like Venice itself in many ways.