HC Deb 10 March 1884 vol 285 c1034
MR. CAUSTON

asked the Postmaster General, What technical objection there is to pasting printed matter on the back of Post Cards, provided that the cutting so pasted does not exceed the size of the card, it being at present within the Postal regulations to enclose a card and loose printed slips in a halfpenny Book Post wrapper?

MR. FAWCETT

Sir, there are objections to the adoption of the suggestion of my hon. Friend the Member for Colchester (Mr. Causton); because, if printed or other matter were allowed to be pasted on the back of a post card it would, I think, be difficult to maintain the distinction between a post card and a letter.