Census Q & A from the Center for Voting and Democracy (very short)
Redistricting Roulette from the Center for Voting and Democracy. Interactive explanation of how subtle differences in drawing the lines between political districts can radically affect the outcome of elections.
Redistricting in America, A State-by-State Analysis by the Rose Institute provides a comprehensive and up-to-date survey of legislative and congressional redistricting systems in each of the 50 states. "Redistricting in America" offers a behind-the-scenes look at the complex and ever-changing world of redistricting.
Proposed finding and recommendation [PDF] submitted to the Residence Rules in the Decennial Census Panel, at the National Academies, June 2, 2005, Prepared by Peter Wagner, Eric Lotke, and Andrew Beveridge