Thomas Aronsson, Sören Blomquist, and Hans Sacklén, "Identifying Interdependent Behavior in an Empirical Model of Labor Supply", Journal of Applied Econometrics, Vol. 14, No. 6, 1999, pp. 607-626. The data used in the article are from the Level of Living Surveys 1974, 1981 and 1991. This is a confidential data source administered by Professor Robert Eriksson at the Swedish Institute for Social Research, Stocholm University, 106 91 Stockholm, Sweden. Permission to use this data source should be directed to Professor Eriksson. The variables used in our study and sample selection rules are described in the file "Variables.abs". Please address any questions to: Soren Blomquist Dept. of Economics Uppsala University Box 513 751 20 Uppsala Sweden