In the case of Lewis Publishing Company v. Morgan, the U.S. Supreme Court dealt with a dispute over postal rates for second-class mail. The Lewis Publishing Company published two magazines and claimed that they were entitled to lower postage rates under an 1879 law which provided reduced rates for periodicals issued from a "known office of publication." However, Postmaster Morgan in New York City disagreed and charged them at higher rate because he believed their primary place of business was not where the magazines were printed but rather where their editorial offices were located (in another state). The court ruled in favor of Lewis Publishing Company, stating that as long as there is some significant part of production happening at a location - such as printing or binding - it can be considered an 'office of publication.' Therefore, companies cannot be denied lower postal rates based on having additional locations elsewhere.

In the dissenting opinion for Lewis Publishing Company v. Morgan, it was argued that the Postmaster's decision to deny second-class mailing privileges to a publication should not be based on his interpretation of its content or purpose. The dissenting justices believed that this power could potentially lead to censorship and infringe upon freedom of speech and press. They contended that Congress did not intend for such an interpretation when they established regulations concerning mail classifications. Instead, these rules were meant solely as administrative measures related to postage rates rather than tools for controlling content dissemination through postal services. Therefore, in their view, any publication meeting basic requirements (like having a list of subscribers) should qualify for second-class mailing status without further scrutiny into its contents or objectives by the Postmaster.