The FRED series Total Credit Market Instruments - Liabilities - Balance Sheet of Households and Nonprofit Organizations is now known as Households and Nonprofit Organizations; Credit Market Instruments; Liability.
The source series id is FL154104005.Q.
This series appears in both Table B.100 and Table L.1. For further information see the assistance provided in the guide to the Financial Accounts at http://www.federalreserve.gov/apps/fof/.
Board of Governors of the Federal Reserve System (US), Households and Nonprofit Organizations; Credit Market Instruments; Liability, Level [TCMILBSHNO], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/TCMILBSHNO, March 21, 2019.