I have followed the discussion about WhiteOut with interest, and finally decided to "jump in." Many years ago ... too many, I fear ... I was taught to use gesso, write the number with India ink, and cover with a coating of clear nail polish. I have been surprised that no one has mentioned gesso up to this point. Are there similar problems with this product and procedure? Jmh ---------------------------------------------------------------------- John M. Harris [log in to unmask] Local History Services (317) 232-4591 (work) Indiana Historical Society (317) 233-3109 (FAX) ----------------------------------------------------------------------