Open Government Data by Joshua Tauberer.
From the website:
This book is the culmination of several years of thinking about the principles behind the open government data movement in the United States. In the pages within, I frame the movement as the application of Big Data to civics. Topics include principles, uses for transparency and civic engagement, a brief legal history, data quality, civic hacking, and paradoxes in transparency.
Johshua’s book can be ordered in hard copy, ebook, or viewed online for free.
You may find this title useful in discussions of open government data.