""How James Chalmers Saved The Penny Postage Scheme: Letter Of The Dundee Bankers And Merchants To The Lords Of Her Majesty�������s Treasury (1890)"" is a historical non-fiction book written by Patrick Chalmers. The book recounts the story of James Chalmers, a Scottish businessman who played a crucial role in the development of the Penny Postage Scheme in the United Kingdom.The book is based on a letter...