More letters sent by the Prince of Wales to government ministers between September 2007 and June 2009 have been published.
Clarence House said the letters show the range of The Prince of Wales' concerns and interests for this country and the wider world.
The latest correspondence includes six from the prince himself and three from Private Secretaries. There are also eight from government ministers.
It follows the publication of a series of private letters - known as "black spider" memos because of the prince’s distinctive handwriting - last month after a lengthy campaign by the Guardian for them to be released.
The Government and officials at Buckingham Palace had battled to keep the letters out of the public eye but the Court of Appeal declared the veto unlawful last year - a ruling upheld by the Supreme Court judges in March.
A summary of a second batch of letters written by Prince Charles to various government ministers between 2007 and 2009.
A summary of the Prince of Wales' correspondence with ministers, which was released today after a ten-year legal battle.
Clarence House statement in full on the publication of letters written by the Prince of Wales to government ministers.