While there are not a lot of books that deal specifically with the CCC, there are hundreds of books about the Great Depression and Franklin Roosevelt's New Deal, many of which contain references to the CCC and also useful information to help put the CCC program in its historical context. Some authors argue that the New Deal was a great success, while others argue that it was not a success and some argue that the programs of the New Deal prolonged the Great Depression. In using these source materials, keep in mind the author's point of view and their opinion. What is their thesis regarding the New Deal? What main point are they striving to make? Weigh their arguments against other authors and check their sources to see if they've done sufficient research to back up their claims.
Here, in no particular order are a few books that deal with the Great Depression and/or the New Deal:
The Bonus Army by Paul Dickson & Thomas B. Allen
Riding the Rails by Errol Lincoln Uys
FDR's Folly by Jim Powell
The Worst Hard Time by Timothy Egan
The New Deal in Arizona by William S. Collins
FDR and His Enemies by Albert Fried
Dust Bowl by Donald Worster
The Forgotten Man by Amity Shlaes
The Great Depression by Robert S. McElvaine
This list is not exhaustive by any means and new titles may be added here from time to time so check back occasionally.