The Brookings Institution Center on Urban and Metropolitan Policy, 1999. National Center for Policy Analysis. Urban Sprawl in a Mostly Rural Country. The Sierra Club Rates the States. The Sprawl Brawl.
Site has information on urban sprawl, both pro and con.
Includes full text articles. Sprawl Watch Clearinghouse. Council of State Governments Info Pack. A Companion of the Texas Transportation Institute's Data on Metropolitan Congestion.