This file contains Captain J. P. Williams’s reports and related records on the Niagara salvage. It documents diving, blasting, grabbing, recovery operations, and efforts to access the bullion room, together with accounts of recovered bullion. The records describe technical difficulties, weather and sea conditions, and modifications to equipment and recovery methods. Also included are cables and correspondence with banking and government authorities concerning progress, supplies, explosives, approvals, and payments. The file covers the packing, transport, and custody of recovered bullion, crew wages, bonuses, injuries, and leave, and references Admiralty involvement and press secrecy. Together, the records provide a chronological account of the salvage operation from the commander’s perspective.