Petition on Post Office spying
On 14 June 1844, a petition was presented to the House of Commons concerning secret Post Office spying on the contents of the letters of Joseph Mazzini and three associates. Image: Photograph of Giuseppe Mazzini, 1 January 1860 (author unknown). This image is in the public domain in the United States because its copyright has expired.
Articles
Marjorie Stone, “On the Post Office Espionage Scandal, 1844″
Kate Lawson, “Personal Privacy, Letter Mail, and the Post Office Espionage Scandal, 1844″