Internal Revenue Service
http://www.irs.gov
Social Security Calculators
http://www.ssa.gov/planners/calculators.htm
Employee Benefits Security Administration
http://www.dol.gov/ebsa
Employee Benefit Research Institute
http://www.ebri.org
American Society of Pension Professionals & Actuaries (ASPPA)
http://www.asppa.org
Pension Benefit Guaranty Corporation (PBGC)
http://www.pbgc.gov
Annual Retirement Plan Limits
http://www.asppa.org/document-vault/pdfs/asaps/2013/13-14
http://www.datair.com/annuallimits.htm