https://www.ssa.gov/history/ssn/misused.html
mentioned in this Planet Money podcast - https://www.npr.org/sections/money/2018/03/14/593620579/episode-830-xxx-xx-xxxx
mentioned in this Planet Money podcast - https://www.npr.org/sections/money/2018/03/14/593620579/episode-830-xxx-xx-xxxx