File Description / Source / Format / Notes / Date Created Articles and Data Release: The articles and data release are in PDF format. This format is also combined with Excel ver. 4 (XLS) tables in compressed executable (EXE) files. September 2001. Corporation Income Tax Returns, 1998 PDF (EXE). Article. Foreign-Controlled Domestic Corporations, 1998 PDF (EXE). Article. Large Nonoperating Private Foundations Panel Study, 1985 - 1997 PDF (EXE). Article. Sales of Capital Assets Reported on Individual Income Tax Returns, 1997 PDF (EXE). Data Release. Sole Proprietorship Returns, 1999 PDF (EXE). Article. Link: Historical Tables and Appendix