The Church's Role in Blessing the City.
These authors examine the church's role in seeking the welfare of the city.

Why Cities Matter
Tim Keller (March 2009)

How Tim Keller Found Manhattan
Tim Stafford (Christianity Today)

The City in Biblical Perspective: Failed and Possible
By Walter Brueggemann

On the theology of cities in the Biblical narrative, both the different kinds of cities and 

What Makes a Good City? A Christian Perspective
by Dr. Toby Howard

A paper showing the significance of cities in the larger biblical framework and how Christians should view the City.

Salt of the Empire: The Role of the Christian Family in Evangelization

by Mike Aquilina (Touchstone, May 2004)

The Church as Community Asset

by Amy Sherman (www.centeronfic.org)

Furrowed Brows, Inc.

by Andy Crouch (Christianity Today)