NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

Uncovering the American Dream: Inequality and Mobility in Social Security Earnings Data since 1937

Wojciech Kopczuk, Emmanuel Saez, Jae Song

NBER Working Paper No. 13345
Issued in August 2007

---- Acknowledgements -----

We thank Clair Brown, David Card, Jessica Guillory, Russ Hudson, Jennifer Hunt, Larry Katz, Alan Krueger, Thomas Lemieux, Michael Leonesio, Joyce Manchester, Robert Margo, David Pattison, Michael Reich, and many seminar participants for helpful comments and discussions. We also thank Ed DeMarco and Linda Maxfield for their support, Bill Kearns, Joel Packman, Russ Hudson, Shirley Piazza, Greg Diez, Fred Galeas, Bert Kestenbaum, William Piet, Jay Rossi, Thomas Mattson for help with the data, and Thomas Solomon and Barbara Tyler for computing support. Financial support from the Sloan Foundation and NSF Grant SES-0617737 is gratefully acknowledged. The views expressed herein are those of the author(s) and do not necessarily reflect the views of the National Bureau of Economic Research.

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