The Census Bureau provides a concordance between the SIC and NAICS industry classifications on their web site. For both the 1992 and 1997 I-O tables, BEA provides a concordance between the codes used in the I-O tables and the Census industry (SIC or NAICS) classification.
- The concordance for 1997 is available in Appendix A of the article "Benchmark Input-Output Accounts of the United States, 1997," in the Survey of Current Business (SCB), December 2002.
- A concordance for 2002 is available in Appendix A of the article "U.S. Benchmark Input-Output Accounts, 2002" in the SCB, October 2007.
- A concordance for 2007 and 2012 is available in Appendix A of the article "Preview of the 2018 Comprehensive Update of the Industry Economic Accounts" in the SCB, August 2018.