Changes in U.S. Family Finances from 2007 to 2010: Evidence from the Survey of Consumer Finances
http://www.federalreserve.gov/pubs/bulletin/2012/pdf/scf12.pdf
Provides insights and data on changes in family income and net worth since the 2007 survey. Shows that the median value of real family income before taxes fell 7.7% and real mean income fell by 11.1% across all families. From the Federal Reserve