Pierce Butler, Federal Trade Commission v. Pacific States Paper Trade Association…
“ The absence of contractual relation between the manufacturer and retailer does not matter. The sale by the wholesaler to the retailer is the initial step in the business completed by the interstate transportation and delivery of the paper. Presumably the seller has then determined whether his source of supply is a mill within or one without the state. If the contract of sale provided for shipment to the purchaser from a mill outside the state, then undoubtedly it would be an essential part of commerce among the states. ”
