What Does SCOTUS Have to Say About 'Incomes'?

The following are historical Court's Findings of Fact, Rulings and Determinations from the Supreme Court of The United States (SCOTUS) as directly pertaining to the Internal Revenue Code.

 
Stratton's Independence, LTD. v. Howbert
Coppage v. Kansas
Brushaber v. Union Pacific R. Co.
Stanton v. Baltic Mining Co.
Gould v. Gould
Doyle v. Mitchell Bros. Co.
Southern Pacific Co. v. Lowe
Eisner v. Macomber
Merchants' Loan & Trust Co. v. Smietanka
Burk-Waggoner Oil Ass'n v. Hopkins
VACANT