Morrison Waite,
Memphis v. United States (108 U.S. 228…
“ We think it would hardly be claimed that if a private individual, living in one of the loyal states during the war, derived an income, which he actually reduced to possession, or used in the payment of debts, from property in confederate territory, he would be exempt from the income tax imposed on him by the internal-revenue laws, because of the source from which his income was derived. ”
