A substantial quantity came from Jo Davies County, IL. Jo Davies is the most northwestern county in the state with a total population today of under 24,000 and...guess what...the county seat is the city of Galena, the family home of Ulysses S. Grant. In my misspent youth, I spent many a weekend traipsing through the woodlands up there and can't even begin to recall all the closed-up diggings I ran across while hunting whitetail, fox, and coyote. French explorers in the 1690s reported lead being mined by the local tribes and, by the 1850s, there were at least two commercial operations working.
Bill