From the webpage:
Over the past year, the Clojure community came together to write a wondrous tome chock full of their collective knowledge. At over 70 contributors, 1600 commits and nearly 200 recipes, this is something special, folks.
Clojure’s very own crowd-sourced cookbook, Clojure Cookbook, is available now.
The author’s are accepting pull requests at: https://github.com/clojure-cookbook/clojure-cookbook.
Must be already planning on a second edition! 😉
Don’t be shy!
Enjoy!