Social Security Administration
Social Security Administration: 2007 Annual Report of the Board of Trustees
This is an annual report issued by the SSA in which they evaluate the state and health of the Social Security program and make projections. It is also in PDF format and there is a summary available.
Social Security Administration
Social Security Online: History
This site addresses the history of social security. There is an invaluable amount of information on this site (timelines, audio clips, etc.).