TY - BOOK AU - Muir, Douglas TI - Postal reform and the Penny Black PY - 1990/// CY - London PB - National Postal Museum KW - Great Britain | Postal History | 19th Century | 18th Century | 17th Century | Postal Service | Postal Laws and Regulations | Postal Rates | Stamps -- Histories | 1840 | Penny Black | Postal Stationery | Mulready Envelope | Mulreadies (Philately) | Mulready, William, 1786-1863. | Designs | Designs -- Unaccepted | Essays and Proofs | Production | Printers | Artists and Designers | Engravers | Post Offices | Post Office Equipment | Postal Markings ER -