Lt. H. C. Baldwin was a member of the 13th Connecticut Vols. who were guarding the U. S. Mint in Dahlonega, Georgia in 1866.
In 1835 the U.S. Congress chartered three branch mints to be located at Dahlonega (Georgia), Charlotte (North Carolina), and New Orleans (Louisiana). These mints were intended to ease an ongoing national shortage of coins, although they also reflected President Andrew Jackson's distrust of bank notes and his fervent desire to weaken the highly centralized Second Bank of the U.S. In some respects the development and operation of these branch mints also refelected the spoils system that flowed from Jackson democracy and that bestowed jobs and other favors upon the supporters of those in political power. After overcoming severe logistical problems in construction due to its remote location, the Dahlonega mint opened in 1938. The onset of the Civil War struck a fatal blow to the Dahlonega branch mint: in 1861 the Confederate government closed the mint and it never reopened. There's Gold in Them Thar Hills: Gold and Gold Mining in Georgia http://dlg.galileo.usg.edu/dahlonega/history.php
From the description of Lt. H. C. Baldwin letterbook, 1866-1897. (University of Georgia). WorldCat record id: 431976903
