Harold Hitz Burton,
Rutkin v. United States — Opinion of the Court
“ Petitioner's control over the cash so received was such that, in the absence of Reinfeld's unlikely repudiation of the transaction and demand for the money's return, petitioner could enjoy its use as fully as though his title to it were unassailable.An unlawful gain, as well as a lawful one, constitutes taxable income when its recipient has such control over it that, as a practical matter, he derives readily realizable economic value from it. ”
