U.S. National Archives (Record Group 104, Entry 235, Letters Sent by Director's Office)
Record group 104, entry 235 covers letters sent from the Mint Director's office, covering the period 1873-1938. The recipient might be a specific mint, the Secretary of the Treasury, a foreign government, U.S. Department or Agency, or individuals and companies. This material currently (6/2016) resides at the National Archives facility in College Park, MD.
Roger W. Burdette notes on entry 235:
Letters sent by the Director’s office, 1873-1938. Press copy books. No reliable index.
Vols. 1-85 are large size fair copies 1884-1901; archives locator is RG104, 450/66/28/04.
Normal volumes are identified by calendar year and offices or subject covered, such as: San Francisco Mint 1890.
National Archives catalog record is https://catalog.archives.gov/id/7064779.
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1 entries found for [year:1874]
6/11/1874James Pollock to First National Bank, Le Ray, N.Y., June 11, 1874
Mint Director James Pollock acknowledges an order for $50 in minor coins.
This particular item is from the Dan Hamelberg collection and not from the National Archives, although a press copy likely exists in this entry (235) of the Archives.
