U.S. National Archives (Record Group 104 [Denver], Entry 4, Registers of Deposits of Gold Bullion, 1863-1939)
This series consists of registers of deposits of gold bullion, also known as the "Weigh Clerks Books". These volumes list the date of deposit, the receipt number, the assay number of the depositor, and the weight of the metal deposited. After 1892 the deposits are listed on Forms 189 or 190.
National Archives online catalog entry is https://catalog.archives.gov/id/2641962. See also the National Archives & Records Administration numismatic finding aids at https://nnp.wustl.edu/library/archivedetail/538870.
Scanned at the National Archives in Denver, courtesy of John Graffeo.