Note 142 — Chapter II · The Power of Congress to Establish Postoffices
Reading edition
“For more than thirty years, not only has the transmission of obscene matter been prohibited, but it has been made a crime, punishable by fine or imprisonment, for a person to deposit such matter in the mails. The constitutionality of this law, we believe, has never been attacked.” Public Clearing House v. Coyne, 194 U. S. 497 (1904), but see Dunlop v. U. S., 165 U. S. 486 (1897), and U. S. v. Popper, 98 Fed. Rep. 423 (1899).