Levin, Harry L.
and United States. Social Security Administration.
Unfunded Private Pension Plans : Bulletin of the United States Bureau of Labor Statistics, No. 1394 ,
Washington, D.C:
For sale by the Superintendent of Documents, U.S. Government Printing Office,
May 1964, https://fraser.stlouisfed.org/title/4931,
accessed on February 26, 2026.