U.S. National Archives (Record Group 104, [Denver] Sequence 40, Correspondence of the Supervisory Architect, 1904 - 1910) Public Deposited
National Archive series description: This series consists of correspondence primarily from the Supervisory Architect involved in the design and construction of the U.S. Mint, Denver, building. The records are comprised mainly of letters received during the construction phase of the Mint building..
The National Archives catalog record is https://catalog.archives.gov/id/2618924. See also the National Archives & Records Administration numismatic finding aids at https://nnp.wustl.edu/library/archivedetail/538870.
National Archives series identifer is 8KRA-104-84-040. Scanned at the National Archives in Denver, CO, courtesy of John Graffeo.