"The fourteenth amendment to the Constitution considered : the right to pursue any lawful trade or avocation, without other restraint than such as equally affects all persons, is one of the privileges of citizens of the United States which can-not be abridged by state legislation : dissenting opinions of Mr. Justice Field, Mr. Justice Bradley, and Mr. Justice Swayne, of U.S. Supreme Court, in the New Orleans slaughter-house cases."

Chas. W. Gordon, Printer, “"The fourteenth amendment to the Constitution considered : the right to pursue any lawful trade or avocation, without other restraint than such as equally affects all persons, is one of the privileges of citizens of the United States which can-not be abridged by state legislation : dissenting opinions of Mr. Justice Field, Mr. Justice Bradley, and Mr. Justice Swayne, of U.S. Supreme Court, in the New Orleans slaughter-house cases."
,” The Making of the Modern U.S., accessed August 9, 2022, http://projects.leadr.msu.edu/makingmodernus/items/show/54.