NEW YORK TIMES, Dec. 14, 1879  Over a full page 2 column is taken up with a piece by Mark Twain, headed "THE POSTAL ORDER AGAIN" "Mark Twain Answers Mr. Key's Private Secretary" "The Postmaster-General's 'Unnecessary Appendage' Instructed in His Duties & Privileges". Included is the lengthy letter signed in type: Mark Twain (see).
Twelve pages, browning at the margins, generally quite nice.