1894 July,Art in Advertising, volume IX, number 5,page168:
When Rudyard Kipling wrote the words, “That belongs to another story,” he conferred upon scribbling mankind an inestimabie blessing. How we ever got along without the accommodating little sentence, I don't know, but it has evidently come to stay. Youwrite yourself “into a corner,” and see no way out of it except to tear up the sheet and begin over, when–Presto! “That belongs to another story” pops into your head and your awkward sentence is gracefully capped.