Pseudonym: Sothern, Richard
Undated HSCA document: ..."P. Memo for the record of meeting between Guimers, Sothern, and Gebien (Keith MacPhee). June 27 (1960) Mujal told Guimers that he had been told by FBI contacts not to allow his supporters to undertake assassination plots against the Castro's, Che Guevara, etc. Mujal feels this puts him on the spot 'because if an attempt of this type is made, the FBI might hold him responsible and take action to deport him. He then was assured by Guimers that he could not be deported without court action and advised to tell the FBI to mind its own business...'"
104-10061-10115: LIST OF NAMES RE KENNEDY ASSASSINATION INVESTIGATION.
02/15/78: CIA document: Page 28: ..."2. SOTHERN, Richard D. - 2699 - Walpole Davis..." - - - 2022 release, page 28: https://www.archives.gov/files/research/jfk/releases/2022/104-10061-10115.pdf