I just purchased and read Renewing God's People: A Concise History of the Churches of Christ by Gary Holloway and Douglas Foster (Abilene Christian University Press, 2001). The authors are members of the Churches of Christ (on the more progressive end), and write from a standpoint of sympathy, yet honesty. The book recounts the journey of the Churches of Christ (conservative wing of the Stone-Campbell movement) from a people who professed to be Christians only, to a people who came to believe they were the only Christians. This is not just historical data, but analysis of why they think this happened and a call to these people back to the original restoration plea. Though the book is perhaps written more to the people of these churches, I would recommend it as a concise introduction for those who might be interested in the historical journey of the "Churches of Christ."