Quoted in Reader's Digest, Sept. 1949. According to Nigel Rees, Cassell's Humorous Quotations, the following appeared in Punch in 1924: " 'It took me nearly ten years to learn that I couldn't write.' 'I suppose you gave it up then?' 'Oh, no! By that time I had a reputation established.' " The issue referred to by Rees is 6 Feb., and the cartoonist is R. Curry.
"The enduring American press: texts of talks given by a panel of distinguished journalists and scholars at a symposium marking the 200th anniversary of the Hartford Courant, Hartford, Connecticut". Book by The Hartford Courant, 1964.