All letters and other Mailable matter addressed to or sent by the Speaker or Chief Clerk of the Legislative Council or of the Legislative Assembly; or to or by any Member of the Legislature at the Seat of Government during any Session of the Legislature, or addressed to any of the Members or Officers in this Section mentioned at the Seat of Government as aforesaid, during the ten days next before the meeting of Parliament.
"Canadian Postal Guide"
Various
All other Mailable matter must be prepaid.
"Business Hints for Men and Women"
Alfred Rochefort Calhoun
The following from the first circular: By the Act of August 4th, 1886, Congress has authorized the extention of the special delivery system to all post offices and to all Mailable matter.
"History of the Postage Stamps of the United States of America"
John Kerr Tiffany