Proceedings of the Assay Commission of 1887 ; also, Laws of the United States relating to the annual assay ; Rules for the organization and government of the Board of Assay  Commissioners ; and, Appendix on propesed legislation.
United States.Department of the Treasury.
[Washington, D.C.] : Treasury Department,
1887.
"Treasury Department document no. 974."
Coinage
Assaying.