Board of Governors of the Federal Reserve System (U.S.), 1935-
and Federal Reserve Board, 1914-1935. Interpretation of Law or Regulation: Classification "Plumbing and Sanitary Fixtures Designed for Household Use" Does Not Include Piping Not a Part of Such Fixtures, Number S-416, Volume 55, Page 405,
Mimeograph Letters and Statements of the Board.
Board of Governors of the Federal Reserve System (U.S.), 1935-.
https://fraser.stlouisfed.org/archival/4957/item/509709, accessed on March 3, 2026.