1983 Summer SOI Bulletin PDF Articles: Crude Oil Windfall Profit Tax, Third Quarter, 1982 PDF Financial Characteristics of the Lumbar and Paper Industries, 1980 PDF Individual Income Tax Returns Selected Characteristics, 1982 Taxpayer Usage Study PDF Informal Suppliers in the Underground Economy PDF Nonresident Alien Income and Tax Withheld, 1981 PDF Trends in Personal Wealth, 1976-1981 PDF Unincorporated Business Activity, 1981 PDF