The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Post Office Archives. Design for an Improved Letter Box. T. M. Baynes. 1857. Multi aperture pillar box. Post Office Archives. 1989. Larkfield
Design for an Improved Letter Box. by T. M. Baynes. 1857. This Ingenious Idea for a Multi Aperture Pillar Box was not Adopted. The Post Office Archives. Larkfield Printing Company
The Post Office Archives Preserve the Historical Records of the British Post Office. Design for an Improved Letter Box. by T. M. Baynes. 1857. Larkfield Printing Company Limited
Post Office Archives 1989. Design for an Improved Letter Box 1857. T. M. Baynes. Larkfield Printing Company. Brighouse. Mail Coach Pioneer John Palmer stamp 1992
The Postcard Commemorates the 150th Anniversary of the First Roadside Letter Box. The Letter Box Study. Ron Hall
Birmingham. Standard letter box and K type letter box. Midlands Postal Board Picture Card. MBP Card 8. Multi view
A Special Type of Letter Box Known as a Bracket Box. No. 11. of a Series Published by the Bath Postal Museum. Unichrome. Joe Whelan
A Special Type of Letter Box Know as a Bracket Box. Bath Postal Museum. No. 11. Unichrome. Joe Whelan