These are scans of the letters as received by Timothy Conway in photostat form (but signed) as annotated by Timothy Conway PhD. He has sworn an affidavit that these are genuine,
and that the 'cleaned up' copies of them also are the same as the originals in content. His formal statement on this issue is found below (here)
Letter 1 Jan. 18 1981 To Directors (SSO)
Letter 2 Feb 21 1981 To Directors (SSO)
Letter 3 Feb 21 1981 to Terry Scott and Mrs. Payne
Letter 4a Mar 25 1981To Directors
Letter 4b (second page)