Journal of Applied Econometrics data archive
http://www.econ.queensu.ca/jae/1998-v13.2/vella-verbeek/.
References
Vella, F. and M. Verbeek (1998) Whose Wages Do Unions Raise? A Dynamic Model of Unionism and Wage Rate Determination for Young Men, Journal of Applied Econometrics, 13(2), 163--183.
Verbeek, M. (2004) A Guide to Modern Econometrics, John Wiley and Sons, http://www.econ.kuleuven.ac.be/GME, chapter 10.