In "Punch Brothers, Punch", Twain says "I came across these jingling rhymes in a newspaper, a little while ago, and read them a couple of times." Apparently these "jingling rhymes" were written by Isaac H. Bromley who, I think, was an editor on The NY Tribune about this time. Twain's version is an only slightly altered copy of Bromley's jingle titled "The Passenjare". I wonder why Twain did not credit Bromley. Would this be considered plagiarism or were newspaper items used without acknowledgment? I am looking for the date and the paper in which Bromley's jingle appeared. I would appreciate any help you can give me. Neil