John Marshall Harlan II,
Eli Lilly and Company v. Sav-on-Drugs…
“ I am not prepared to subscribe to such an extension at the expense of state power to regulate the promotion of sales of goods owned and located within the State when the countervailing federal considerations are as thin as they seem to me to be here, and when the interstate seller remains free to enjoy the immunities of interstate commerce by simply restricting its promotion to those who may buy from its own out-of-state store of goods. ”
