"Entered in the Clerks Office of the U.S. Distt. Court for the northern Distt. of Illinois, January A.D. 1861, by George Hale & J. M. Trusdell, according to act of Congress, regarding copy rights." LC Land owne More
"Entered according to Act of Congress in the year 1873 by Frost & Mc. Lennan in the Office of the Librarian of Congress in Washington." LC Land ownership maps, 123 Available also through the Library of Congress More