Francis L. Wellman, The Art of Cross-Examination — Chapter 14 (1903)
“ Attorney-General. "Read the document, and tell me, on your oath, whether it is your signature." Smith. "I have some doubt whether it is mine." Attorney-General. "Read the document, sir. Was it prepared in your office?" Smith. "It was not." Attorney-General. "I will have an answer from you on your oath one way or another. Isn't that your handwriting?" Smith. "I believe that it is not my handwriting. I think that it is a very clever imitation of it." Attorney-General. "Will you swear that it is not?" Smith. "I will. I think that it is a very good imitation of my handwriting." ”
