Letter from the Secretary of the Treasury transmitting a report of the director of the mint, of assays made of several species of foreign gold and silver coins, pursuant to the act of April 29, 1816
U.S. Mint Reports (1818)
Mint Director Robert Patterson's report on assays of foreign coins, in accordance with the act of April 29, 1816. Patterson reports on British, French, Spanish, and Portuguese coins. Text also appears in the American State Papers, finance (class 3), volume 3, no. 520.
Paul Hybert summary: "An assay of foreign coins, from mint director Patterson to Treasury Secretary Crawford, who relayed it to Congress."
See transcript at: http://www.chicagocoinclub.org/lib/us/asp/cl03.finance/v3/n520.html