Set of seven buttons for a Navigation Inspector of the Thames Conservancy.
Worn by John Powell.
Thames Conservancy Bye-Laws for the Regulation of the River Thames and the Navigation Thereof and for Other Purposes.
London: Printed by Harrison & Sons, Ltd., 44-47, St. Martin's Lane, W.C.2, Printers in Ordinary to His Majesty, 1929.
Thames Conservancy instructions to lock keepers and ferryman concerning the collection of revenues due to the conservators. Issued by The Thames Conservancy on 8th March 1954.