§ 69. Mr. Storeyasked the Postmaster-General why he has prohibited the use of air mail envelopes with coloured borders
§ Mr. Ness EdwardsThe Post Office is medically advised that the use of envelops with multicoloured borders is undesirable as they are a potential source of eye-strain. There is also a risk of their causing delay by mis-circulation of overseas letters other than surcharged air mail and of inland letters if, as could not be prevented, the special envelopes were used for such correspondence.