SOI Bulletin: Spring 1993 Articles: Estate Tax Returns, 1989-1991 Foreign Recipients of U.S. Income, 1990 High-Income Tax Returns, 1989 Individual Income Tax Rates and Tax Shares, 1988-1989 Individual Income Tax Returns, Preliminary Data, 1991 Personal Wealth, 1989 Transactions Between Foreign Controlled Corporations and Related Foreign Persons, 1989