The uniform fourpenny post was a short-lived uniform pre-paid letter rate in United Kingdom of Great Britain and Ireland that lasted for 36 days from 5 December 1839 until 9 January 1840.[1][2] The Uniform Fourpenny Post was the first component of the comprehensive reform to the Royal Mail postal service that took place in the 19th century.
- ^ Hill, Rowland (1840). "On the Effect of the New Postal Arrangements upon the Number of Letters". Journal of the Statistical Society of London. 3 (1). London: Statistical Society (Great Britain): 102–105. doi:10.2307/2337966. JSTOR 2337966. Retrieved 23 November 2009.
- ^ "Glossary of Stamp Collecting Terms". Ask Phil. Collectors Club of Chicago. Archived from the original on 19 February 2012. Retrieved 17 April 2009.