The FRED series Inventories - Assets with Tangible Assets Stated at Historical Cost - Balance Sheet of Nonfarm Nonfinancial Corporate Business is now known as Nonfinancial Corporate Business; Inventories, Historical Cost Basis (Soi).
The source series id is FL105020000.Q.
This series appears in Table B.103. 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), Nonfinancial Corporate Business; Inventories, Historical Cost Basis (Soi), Level [IATASHCBSNNCB], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/IATASHCBSNNCB, September 23, 2018.